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Questions

18 You are supplied with dilute hydrochloric acid together with • copper solid, • magnesium solid, • aqueous lead nitrate, • aqueous silver nitrate. How many different insoluble chlorides could you make?

O levels CHEMISTRY 5070/12/M/J/15

17 Acidified potassium manganate(VII) is used as a test reagent. When it is added to an aqueous solution of compound X, the colour of the test reagent changes from ......1...... . This colour change shows that X is ......2...... . Which words correctly co

O levels CHEMISTRY 5070/12/M/J/15

16 Hydrogen reacts with iodine to form hydrogen iodide. This is a slow reaction.

O levels CHEMISTRY 5070/12/M/J/15

15 The energy diagram represents a chemical reaction carried out both with a catalyst and without a catalyst.

O levels CHEMISTRY 5070/12/M/J/15

14 Caesium is a Group I metal. Which reaction involving this element would not produce hydrogen?

O levels CHEMISTRY 5070/12/M/J/15

13 The list shows some substances that conduct electricity. 1 aqueous sodium chloride 2 copper 3 graphite In which substance(s) are only electrons involved in the conduction?

O levels CHEMISTRY 5070/12/M/J/15

12 What is the relative molecular mass, Mr, of CuSO4.5H2O?

O levels CHEMISTRY 5070/12/M/J/15

11 Ammonia is manufactured from nitrogen and hydrogen by the Haber process.

O levels CHEMISTRY 5070/12/M/J/15

10 Using the Periodic Table for the relative atomic masses, which has the greatest mass?

O levels CHEMISTRY 5070/12/M/J/15

9 What happens when sodium chloride melts? A Covalent bonds in a giant lattice are broken. B Electrons are released from atoms. C Electrostatic forces of attraction between ions are overcome. D Molecules are separated into ions.

O levels CHEMISTRY 5070/12/M/J/15

8 Which row shows correct statements about the speed at which a gas diffuses?

O levels CHEMISTRY 5070/12/M/J/15

7 The table shows the results of two reactions of an aqueous solution of a salt.

O levels CHEMISTRY 5070/12/M/J/15

6 Which compound contains only eight covalent bonds?

O levels CHEMISTRY 5070/12/M/J/15

5 Which substance has metallic bonding? conducts electricity state of product formed on reaction when solid when liquid with oxygen

O levels CHEMISTRY 5070/12/M/J/15

4 The metals Cr, Co, Fe and Mn are all transition elements. Which particles have the same number of electrons?

O levels CHEMISTRY 5070/12/M/J/15

3 Which molecules all contain one or more double covalent bonds? A chlorine, nitrogen and methane B chlorine, oxygen and ethene C oxygen, hydrogen chloride and ethene D oxygen, carbon dioxide and ethene

O levels CHEMISTRY 5070/12/M/J/15

2 The concentration of aqueous sodium carbonate can be found by reaction with hydrochloric acid of known concentration using the indicator methyl orange.

O levels CHEMISTRY 5070/12/M/J/15

1 The fractional distillation apparatus shown is being used to separate a mixture of two liquids. A thermometer is missing from the apparatus. Where should the bulb of the thermometer be placed?

O levels CHEMISTRY 5070/12/M/J/15

In the diagram AB = 4a, BC = b and DC = 7a. The lines AC and DB intersect at the point X. Find, in terms of a and b,

O levels ADD MATHS 4037/12/M/J/15

6 A particle moves in a straight line such that its displacement, x m, from a fixed point O after t s, is given by x . (i) Find the initial displacement of the particle from O.

O levels ADD MATHS 4037/12/M/J/15

5 (a) A security code is to be chosen using 6 of the following: • the letters A, B and C • the numbers 2, 3 and 5 • the symbols * and $.     None of the above may be used more than once. Find the number of different security codes that may be chosen if

O levels ADD MATHS 4037/12/M/J/15

The diagram shows a circle, centre O, radius 12cm. The points A, B and C lie on the circumference of this circle such that angle AOB is 1.7 radians and angle AOC is 2.4 radians. (i) Find the area of the shaded region.

O levels ADD MATHS 4037/12/M/J/15

3 Find the inverse of the matrix and hence solve the simultaneous equations

O levels ADD MATHS 4037/12/M/J/15

2 Show that tan +cot /cosec = sec

O levels ADD MATHS 4037/12/M/J/15

1 Given that the graph of y does not meet the x-axis, find the possible values of k.

O levels ADD MATHS 4037/12/M/J/15

7 A database table, SALES, is used to keep a record of items made and sold by a furniture maker(a) Explain why the field Item number could not be used as a primary key.

O levels COMPUTER SCIENCE 2210/22/O/N/19

6 Explain why constants, variables and arrays are used in programming

O levels COMPUTER SCIENCE 2210/22/O/N/19

5 A programmer writes a program to weigh baskets of fruit in grams, keeping a total of the weight and counting the number of baskets. The total weight is stored in a variable Total and the number of baskets is stored in a variable BasketCount. Explain, in

O levels COMPUTER SCIENCE 2210/22/O/N/19

4 Four validation checks and four descriptions are shown. Draw a line to connect each validation check to the correct description.

O levels COMPUTER SCIENCE 2210/22/O/N/19

3 (a) The flowchart checks the lengths of a batch of 10 ropes. For the batch to be accepted 90% of the lengths need to be between 24.9 and 25.1 metres.

O levels COMPUTER SCIENCE 2210/22/O/N/19

2 An algorithm has been written in pseudocode to select a random number using the function RandInt(n), which returns a whole number between 1 and the argument n. The algorithm then allows the user to guess the numbe

O levels COMPUTER SCIENCE 2210/22/O/N/19

1 (a) All variables, constants and other identifiers must have meaningful names. (i) Describe the data structures that you have used to store the data for the concrete slabs in Task 1, include the name, data type and use for each data structure.

O levels COMPUTER SCIENCE 2210/22/O/N/19

11 Robert has a mobile device that uses RAM, ROM and an SSD. (a) State what the RAM, ROM and SSD are used for.(b) Give two reasons why an SSD, rather than a HDD, is used in the mobile device.

O levels COMPUTER SCIENCE 2210/12/O/N/19

10 Data is valuable to a company. (a) Companies use error detection methods to make sure that data is accurate. One error detection method is the use of a check digit. Explain what is meant by a check digit and how it is used to detect errors.

O levels COMPUTER SCIENCE 2210/12/O/N/19

9 Maisey purchases a new router and attaches it to her computer. The connection she sets up uses duplex data transmission. (a) Five statements are given about duplex data transmission. Tick (✓) to show if the statement is True or False.

O levels COMPUTER SCIENCE 2210/12/O/N/19

8 Consider the logic circuit:(a) Write a logic statement to match the given logic circuit.(b) Complete the truth table for the given logic circuit.

O levels COMPUTER SCIENCE 2210/12/O/N/19

7 Gerald uses a keyboard to enter a website address into the address bar of his browser. (a) Describe how Gerald’s key presses on his keyboard are processed by the computer

O levels COMPUTER SCIENCE 2210/12/O/N/19

6 Touch screen technologies can be described as resistive or capacitive. Six statements are given about resistive and capacitive technology. Tick (✓) to show if the statement applies to Resistive or Capacitive technology

O levels COMPUTER SCIENCE 2210/12/O/N/19

5 Audrey wants to send a sound file to Nico using email. The file is too large to attach to an email so Audrey decides to compress the file. She uses lossy compression to reduce the size of the sound file. (a) Describe how lossy compression reduces the si

O levels COMPUTER SCIENCE 2210/12/O/N/19

4 An 8-bit binary register contains the value:(a) Convert the binary value to denary.(b) The contents of the register shifted one place to the right would give the result:

O levels COMPUTER SCIENCE 2210/12/O/N/19

3 The data from a sensor must be converted from analogue to digital to be processed by a computer. (a) State what is meant by analogue data.

O levels COMPUTER SCIENCE 2210/12/O/N/19

2 The Von Neumann model for a computer system uses several components in the fetch-execute cycle. One component that is used is the Control Unit (CU). Identify four other components that are used in the Von Neumann model for a computer system.

O levels COMPUTER SCIENCE 2210/12/O/N/19

1 Computer memory size is measured in multiples of bytes. Four statements about computer memory sizes are given in the table. Tick (✓) to show if the statement is True or False.

O levels COMPUTER SCIENCE 2210/12/O/N/19

6 A database table, FLIGHT, is used to keep a record of flights from a small airfield. Planes can carry passengers, freight or both. Some flights are marked as private and only carry passengers.

O levels COMPUTER SCIENCE 2210/22/M/J/19

5 Explain what is meant by validation and verification. Give an example for each one.

O levels COMPUTER SCIENCE 2210/22/M/J/19

4 For each of the four groups of statements in the table, place a tick in the correct column to show whether it is an example of Selection or Repetition.

O levels COMPUTER SCIENCE 2210/22/M/J/19

3 This flowchart inputs the marks gained in an examination. An input of –1 ends the routine.

O levels COMPUTER SCIENCE 2210/22/M/J/19

2 (a) An algorithm has been written in pseudocode to input 100 numbers, select and print the largest number and smallest number.

O levels COMPUTER SCIENCE 2210/22/M/J/19

1 (a) All variables, constants and other identifiers must have meaningful names. Describe the data structures you have used in Task 1 to record the items for sale. Include some sample data for each data structure you have described.

O levels COMPUTER SCIENCE 2210/22/M/J/19

10 Remy has a mobile device that has a capacitive touch screen. Describe how the capacitive touch screen registers Remy’s touch.

O levels COMPUTER SCIENCE 2210/12/M/J/19

9 The contents of three binary registers have been transmitted from one computer to another. Even parity has been used as an error detection method. The outcome after transmission is: Register A and Register C have been transmitted correctly. Register B h

O levels COMPUTER SCIENCE 2210/12/M/J/19

8 Consider the logic statement: X = 1 if ((A is 1 NOR C is 1) AND (B is NOT 1 NOR C is 1)) OR (A is 1 AND B is 1) (a) Draw a logic circuit to match the given logic statement. Each logic gate used must have a maximum of two inputs. Do not attempt to simpli

O levels COMPUTER SCIENCE 2210/12/M/J/19

7 (a) An office has an automated lighting system. When movement is detected in the office the lights are switched on. If movement is not detected for a period of 2 minutes the lights are switched off. The system uses a sensor and a microprocessor. Descri

O levels COMPUTER SCIENCE 2210/12/M/J/19

6 Priya creates a website to sell her old comic books and superhero figures. (a) She uses HTML to create her website. The HTML she produces has both structure and presentation. Explain what is meant by HTML structure and presentation. Include an example

O levels COMPUTER SCIENCE 2210/12/M/J/19

5 A music company wants to send a new music file to many radio stations. It will send the music file the day before the release date so that the radio stations can store the file ready for release. The music company does not want the radio stations to be

O levels COMPUTER SCIENCE 2210/12/M/J/19

4 (a) Marley wants to store a video he has created for his school project. He considers using a DVD or a Blu-ray to store the video. Explain two differences between a DVD and a Blu-ray

O levels COMPUTER SCIENCE 2210/12/M/J/19

3 Vanessa writes a paragraph as an answer to an examination question about the central processing unit (CPU). Use the list given to complete Vanessa’s answer by inserting the correct six missing terms. Not all terms will be used.

O levels COMPUTER SCIENCE 2210/12/M/J/19

2 A finance company uses off-line storage to archive their accounts. (a) Explain what is meant by off-line storage.(b) The computers in the finance company use both primary and secondary storage. (i) Give one example of primary storage.

O levels COMPUTER SCIENCE 2210/12/M/J/19

1 Input and output devices are often connected to a personal computer. (a) Identify three input devices that can be connected to a personal computer.

O levels COMPUTER SCIENCE 2210/12/M/J/19

6 A database table, PORTRAIT, is used to keep a record of the portraits available from a photographic studio. Each portrait has a unique reference number PICnnn, where n is a single digit, for example PIC123. The studio keeps a record of the size (for exa

O levels COMPUTER SCIENCE 2210/22/O/N/18

5 The flowchart checks the level of chlorine and the depth of water compared to the height of the swimming pool. Error messages are output if a problem is found.

O levels COMPUTER SCIENCE 2210/22/O/N/18

4 A programmer wants to test that the readings from 2000 electricity meters are greater than 400 units and less than 900 units. The programmer uses selection and repetition statements as part of the program. Explain, using programming statements, how sele

O levels COMPUTER SCIENCE 2210/22/O/N/18

3 Four programming concepts and four descriptions are shown. Draw a line to connect each programming concept to the most appropriate description.

O levels COMPUTER SCIENCE 2210/22/O/N/18

2 (a) Write an algorithm, using pseudocode, to input three different numbers, multiply the two larger numbers together and output the result. Use the variables: Number1, Number2 and Number3 for your numbers and Answer for your result.

O levels COMPUTER SCIENCE 2210/22/O/N/18

1 (a) All variables, arrays, constants and other identifiers should have meaningful names. (i) State the name of one variable you have used for Task 3. Give the data type for the variable. State what it is used for

O levels COMPUTER SCIENCE 2210/22/O/N/18

10 A system uses pH sensors and a microprocessor to help monitor pollution in a river. The pH of the water should be between 6 and 8. The system outputs an alert if the pH of the water is not in this range. Explain how the system uses the pH sensors and t

O levels COMPUTER SCIENCE 2210/12/O/N/18

9 (a) Computers can transmit data using different methods. Describe the three data transmission methods given. (i) Serial data transmission

O levels COMPUTER SCIENCE 2210/12/O/N/18

8 Describe the purpose of an interrupt in a computer system.

O levels COMPUTER SCIENCE 2210/12/O/N/18

7 Six internet terms and six definitions are listed. Draw a line to connect each term to a correct definition.

O levels COMPUTER SCIENCE 2210/12/O/N/18

6 (a) Many programmers write computer programs in high-level languages. The programs need to be translated into machine code to be read by the computer. State two types of translator that can be used.

O levels COMPUTER SCIENCE 2210/12/O/N/18

5 (a) Karina is taking her Computer Science examination. She has three questions to answer about output devices. (i) For the first question she writes the answer: “It is a high powered laser that cuts materials such as thin metals or wood.” Identify th

O levels COMPUTER SCIENCE 2210/12/O/N/18

4 (a) Identify three security issues that can put a computer system at risk.(b) Explain how a firewall can help to protect a computer system from security issues

O levels COMPUTER SCIENCE 2210/12/O/N/18

3 A greenhouse uses a system to monitor the conditions that plants need to grow. The inputs to the system are:The system will sound an alarm when certain conditions are detected. Alarm (X) will sound (=1) when: window is closed and temperature >=26°C or t

O levels COMPUTER SCIENCE 2210/12/O/N/18

2 A computer uses RAM and ROM to store data. (a) The table contains three statements about RAM or ROM. Tick (✓) to show whether each statement describes RAM or ROM.

O levels COMPUTER SCIENCE 2210/12/O/N/18

1 Computers use a character set to convert text into binary. One character set that can be used is ASCII. Each letter in ASCII can also be represented as a denary value. (a) The word BUS has the denary values:

O levels COMPUTER SCIENCE 2210/12/O/N/18

6 A database table, TREES, is used to keep a record of the trees in a park. Each tree is given a unique number and is examined to see if it is at risk of dying. There are over 900 trees; part of the database table is shown.

O levels COMPUTER SCIENCE 2210/22/M/J/18

5 A program checks that the weight of a basket of fruit is over 1.00 kilograms and under 1.10 kilograms. Weights are recorded to an accuracy of two decimal places and any weight not in this form has already been rejected. Give three weights as test data a

O levels COMPUTER SCIENCE 2210/22/M/J/18

4 A programmer has written a routine to store the name, email address and password of a contributor to a website’s discussion group. (a) The programmer has chosen to verify the name, email address and password. Explain why verification was chosen and des

O levels COMPUTER SCIENCE 2210/22/M/J/18

3 This pseudocode algorithm inputs two non-zero numbers and a sign, and then performs the calculation shown by the sign. An input of zero for the first number terminates the process.

O levels COMPUTER SCIENCE 2210/22/M/J/18

2 (a) Draw a flowchart for an algorithm to input numbers. Reject any numbers that are negative and count how many numbers are positive. When the number zero is input, the process ends and the count of positive numbers is output.

O levels COMPUTER SCIENCE 2210/22/M/J/18

(a) All variables, constants and other identifiers should have meaningful names. (i) State the name, the data type and the use of two variables that you have used in Task 2. (ii) Describe, with the aid of some sample data, the data structures that you h

O levels COMPUTER SCIENCE 2210/22/M/J/18

12 (a) Selma has some important personal information that she needs to email to her employer. She wants to make sure that if the personal information is intercepted, it cannot be understood. (i) State how Selma could email her personal data more securel

O levels COMPUTER SCIENCE 2210/12/M/J/18

11 A factory uses a security system to control a security light. The system uses a sensor and a microprocessor. Explain how the security system makes use of the sensor and the microprocessor to control the security light.

O levels COMPUTER SCIENCE 2210/12/M/J/18

10 Alexandra has a new mobile device. It has a touch screen that uses capacitive technology. (a) Describe how a capacitive touch screen registers Alexandra’s touch

O levels COMPUTER SCIENCE 2210/12/M/J/18

9 An advertisement in a magazine displays this barcode:(a) Identify this type of barcode. (b) Explain how the data stored in this barcode is read.

O levels COMPUTER SCIENCE 2210/12/M/J/18

8 Dimitri is writing a computer program in a high-level language. He needs to send just the machine code for the program to his friend, electronically. It is important that the program is executed as quickly as possible. Identify which translator will be

O levels COMPUTER SCIENCE 2210/12/M/J/18

7 Consider the logic statement: X = 1 if ((A is 1 AND B is NOT 1) NAND C is 1) XOR ((A is 1 AND C is 1) OR B is 1) (a) Draw a logic circuit to represent the given logic statement.

O levels COMPUTER SCIENCE 2210/12/M/J/18

6 Kelvin correctly answers an examination question about the Von Neumann model. Eight different terms have been removed from his answer. Complete the sentences in Kelvin’s answer, using the list given. Not all items in the list need to be used.

O levels COMPUTER SCIENCE 2210/12/M/J/18

5 The three binary numbers in the registers X, Y and Z have been transmitted from one computer to another. Parity bit Register X 1 0 0 1 0 0 1 0 Register Y 1 1 1 0 0 1 1 1 Register Z 1 1 1 0 1 0 0 1 Only one binary number has been transmitted correctly. T

O levels COMPUTER SCIENCE 2210/12/M/J/18

4 Jafar is using the Internet when he gets the message: “D03, page is not available” Jafar remembers that hexadecimal is often used to represent binary values in error codes. Convert the hexadecimal number in the error message into 12-bit binary.

O levels COMPUTER SCIENCE 2210/12/M/J/18

3 A stopwatch uses six digits to display hours, minutes and seconds. The stopwatch is stopped at: 0 2 3 1 5 8 Hours Minutes Seconds An 8-bit register is used to store each pair of digits. (a) Write the 8-bit binary numbers that are currently stored for th

O levels COMPUTER SCIENCE 2210/12/M/J/18

2 (a) Nancy has captured images of her holiday with her camera. The captured images are stored as digital photo files on her camera. Explain how the captured images are converted to digital photo files.

O levels COMPUTER SCIENCE 2210/12/M/J/18

1 Different units of data can be used to represent the size of a file, as it changes in size. Fill in the missing units of data, using the list given: • byte • gigabyte (GB) • megabyte (MB) • nibble The units of data increase in size from smallest to larg

O levels COMPUTER SCIENCE 2210/12/M/J/18

6 A database table, TRAIN, is to be set up for a railway company to keep a record of the engines available for use. Each engine has a unique number made up of 5 digits, nnnnn. The engines are classified as freight (F) or passenger (P) together with a powe

O levels COMPUTER SCIENCE 2210/22/O/N/17

5 (a) This flowchart checks a batch of 10 rice sacks for weight. Sacks should weigh 50 kilograms each. Sacks weighing over 50.5 kilograms or less than 49.5 kilograms are rejected. The number of sacks accepted and the number of sacks rejected is output. ST

O levels COMPUTER SCIENCE 2210/22/O/N/17

4 IF … THEN … ELSE … ENDIF is one type of conditional statement used when writing pseudocode. Identify and describe another type of conditional statement that you could use when writing pseudocode. Give a reason why you would use this type of conditional

O levels COMPUTER SCIENCE 2210/22/O/N/17

3 The following diagram shows four data structures and four descriptions. Draw a line to connect each data structure to the correct description.

O levels COMPUTER SCIENCE 2210/22/O/N/17

2 Write an algorithm using either pseudocode or a flowchart, to: • input a positive integer • use this value to set up how many other numbers are to be input • input these numbers • calculate and output the total and the average of these numbers.

O levels COMPUTER SCIENCE 2210/22/O/N/17

1 (a) All variables, constants and other identifiers should have meaningful names. (i) For one variable that you have used to record the information about a single boat in Task 1, state the name, data type and its use.

O levels COMPUTER SCIENCE 2210/22/O/N/17

11 Complete the paragraphs choosing the correct five terms from the list. Each term can only be used once: • Ethics • Freeware • Free Software • Hacking • Malware • Plagiarism • Shareware • Virus

O levels COMPUTER SCIENCE 2210/12/O/N/17

10 (a) Describe what is meant by Transport Layer Security (TLS)(b) Name three different applications of TLS

O levels COMPUTER SCIENCE 2210/12/O/N/17

9 Anna has a farm that grows fruit. She has a system that monitors the conditions for growing the fruit. Sensors are used in this system. (a) Explain what is meant by the term sensor.

O levels COMPUTER SCIENCE 2210/12/O/N/17

8 (a) A computer has 2048MB of RAM. How many GB of RAM does the computer have? Show your working.

O levels COMPUTER SCIENCE 2210/12/O/N/17

7 Draw a logic circuit to represent the logic statement: X = 1 if (A is NOT 1 AND B is 1) AND (A is NOT 1 AND C is NOT 1) OR (B is 1 AND C is 1)

O levels COMPUTER SCIENCE 2210/12/O/N/17

6 Selma writes the following four answers in her Computer Science examination. State which computer terms she is describing. “It is a signal. When the signal is received it tells the operating system that an event has occurred.” Selma is describing

O levels COMPUTER SCIENCE 2210/12/O/N/17

5 Raj is using the Internet to do some online shopping. He visits a website that tells him that it uses cookies. (a) Explain what is meant by the term cookies

O levels COMPUTER SCIENCE 2210/12/O/N/17

4 A file server is used as a central data store for a network of computers. Rory sends data from his computer to a file server that is approximately 100 metres away. It is important that the data is transmitted accurately. Rory needs to be able to read da

O levels COMPUTER SCIENCE 2210/12/O/N/17

3 (a) Explain the differences between the binary number system and the denary number system.(b) Explain the process of converting the binary number 1010 into a denary number

O levels COMPUTER SCIENCE 2210/12/O/N/17

2 Storage devices and storage media can be categorised as primary, secondary or off-line. Write primary, secondary or off-line next to each storage device or medium to indicate its most suitable category.

O levels COMPUTER SCIENCE 2210/12/O/N/17

1 A robot arm in a factory is programmed to move products. The binary instructions to operate the robot arm are:The instructions are entered as hexadecimal values. An operator enters the values: 9 1 C 3 F Convert the values and write down the operation (

O levels COMPUTER SCIENCE 2210/12/O/N/17

5 A database table, SHEEP, is used to keep a record of the sheep on a farm. Each sheep has a unique ear tag, EARnnnn; n is a single digit. The farmer keeps a record of the date of birth, the gender and the current weight of each sheep in kilograms. (a) Id

O levels COMPUTER SCIENCE 2210/22/M/J/17

4 An algorithm has been written in pseudocode to input 100 numbers and print out the sum. A REPEAT … UNTIL loop has been used. Count ← 0 Sum ← 0 REPEAT INPUT Number Sum ← Sum + Number Count ← Count + 1 UNTIL Count > 100

O levels COMPUTER SCIENCE 2210/22/M/J/17

3 This flowchart inputs the weight of items in kilograms to be loaded on a trailer. Any item over 25 kilograms is rejected. The trailer can take up to 100 kilograms.

O levels COMPUTER SCIENCE 2210/22/M/J/17

2 (a) Write an algorithm to input three different numbers, and then output the largest number. Use either pseudocode or a flowchart.

O levels COMPUTER SCIENCE 2210/22/M/J/17

1 (a) All variables, constants and other identifiers should have meaningful names. (i) For a variable that you have used to record information about the cost of the outing in Task 1, state the name, data type and its use.

O levels COMPUTER SCIENCE 2210/22/M/J/17

11 A company sells smartphones over the Internet. Explain how the information stored on the company’s website is requested by the customer, sent to the customer’s computer and displayed on the screen

O levels COMPUTER SCIENCE 2210/12/M/J/17

10 For this logic statement: X = 1 if (( A is 1 AND B is 1 ) OR ( B is 1 AND C is NOT 1 )) (a) Draw the logic circuit.

O levels COMPUTER SCIENCE 2210/12/M/J/17

9 A cold store is kept at a constant low temperature using a sensor, a microprocessor and a cooling unit. Explain how the sensor and microprocessor will maintain a constant low temperature.

O levels COMPUTER SCIENCE 2210/12/M/J/17

8 A company has a number of offices around the world. (a) Data is transmitted between the offices over the Internet. In order to keep the data safe the company is using Secure Socket Layer (SSL) protocol and a firewall at each office. Explain how SSL pro

O levels COMPUTER SCIENCE 2210/12/M/J/17

7 Computer A is communicating with computer B. (a) Draw an arrow or arrows to show simplex, duplex and half-duplex data transmission. The direction of the data transmission must be fully labelled.

O levels COMPUTER SCIENCE 2210/12/M/J/17

6 Airline boarding passes can be read from a smartphone instead of a printout.

O levels COMPUTER SCIENCE 2210/12/M/J/17

5 (a) The denary number 57 is to be stored in two different computer registers. Convert 57 from denary to binary and show your working.

O levels COMPUTER SCIENCE 2210/12/M/J/17

4 There are various methods used to detect errors that can occur during data transmission and storage. Describe each of the following error detection methods.

O levels COMPUTER SCIENCE 2210/12/M/J/17

3 The diagram shows five output devices and five descriptions. Draw a line between each output device and its description.

O levels COMPUTER SCIENCE 2210/12/M/J/17

2 Give two examples of primary, secondary and off-line storage.

O levels COMPUTER SCIENCE 2210/12/M/J/17

1 Name three different buses that are used in the fetch-execute cycle.

O levels COMPUTER SCIENCE 2210/12/M/J/17

5 A database, PLAYPRODUCTION, was set up to show the performance dates, prices and number of seats available at a theatre specialising in Shakespeare productions.

O levels COMPUTER SCIENCE 2210/22/O/N/16

4 IF ... THEN ... ELSE ... ENDIF and CASE ... OF ... OTHERWISE ... ENDCASE are two different conditional statements that you can use when writing pseudocode. Explain, using examples, why you would choose to use each conditional statement.

O levels COMPUTER SCIENCE 2210/22/O/N/16

3 The flowchart below inputs an integer. The predefined function DIV gives the value of the division, for example Z ← 11 DIV 3 gives the value Z = 3. The predefined function MOD gives the value of the remainder, for example Z ← 11 MOD 3 gives the value Z

O levels COMPUTER SCIENCE 2210/22/O/N/16

2 Read this section of program code that inputs positive numbers, discards any negative numbers and then outputs the average. An input of zero ends the process. 1 Total = 0 2 Counter = 100 3 REPEAT 4 REPEAT 5 INPUT Num 6 UNTIL Num < 0 7 Total = Tot

O levels COMPUTER SCIENCE 2210/22/O/N/16

1 (a) All variables, constants and other identifiers should have meaningful names. (i) For three of the variables that you have used in Task 1, state the name, type and its use.

O levels COMPUTER SCIENCE 2210/22/O/N/16

12 Explain the differences between freeware and free software.

O levels COMPUTER SCIENCE 2210/12/O/N/16

11 A security system is installed in a house. A hexadecimal number is entered to activate or deactivate the alarm. (a) The alarm code is set to hexadecimal number 2 A F Show how this number would be stored in a 12-bit binary register. [3] (b) Identify tw

O levels COMPUTER SCIENCE 2210/12/O/N/16

10 (a) Describe what is meant by HTML.(b) The following URL is typed in: http://www.cie.org.uk/ComputerSciencePapers

O levels COMPUTER SCIENCE 2210/12/O/N/16

9 (a) Explain what is meant by a denial of service attack(b) Name and describe two other potential security threats when using the Internet.

O levels COMPUTER SCIENCE 2210/12/O/N/16

8 Identify whether the four statements about file compression are correct by writing TRUE or FALSE in the following table.

O levels COMPUTER SCIENCE 2210/12/O/N/16

7 (a) Complete the truth tables and name the single logic gate that could replace each logic circuit:

O levels COMPUTER SCIENCE 2210/12/O/N/16

6 Four computer terms and eight descriptions are shown below. Draw lines to connect each computer term to the correct description(s).

O levels COMPUTER SCIENCE 2210/12/O/N/16

5 A computer uses an 8-bit register. The 8-bit register contains binary integers. (a) Write the denary (base 10) value represented by:

O levels COMPUTER SCIENCE 2210/12/O/N/16

4 Nine bytes of data are transmitted from one computer to another. Even parity is used. An additional parity byte is also sent. The ten bytes arrive at the destination computer as follows

O levels COMPUTER SCIENCE 2210/12/O/N/16

3 (a) Explain what is meant by: (i) Serial data transmission(b) A computer in a factory is connected to a printer. The printer is located in an office 1km away from the factory. Identify which data transmission method would be most suitable for this con

O levels COMPUTER SCIENCE 2210/12/O/N/16

2 State four functions of an operating system.

O levels COMPUTER SCIENCE 2210/12/O/N/16

1 (a) Give two reasons why a programmer would choose to write code in a low-level language.(b) High-level languages require either an interpreter or a compiler to translate the program. The table below lists a number of statements about language translato

O levels COMPUTER SCIENCE 2210/12/O/N/16

7 A database, SOFASELECT, was set up to show the prices of suites, sofas and chairs for sale from an online furniture warehouse. Part of the database is shown below.

O levels COMPUTER SCIENCE 2210/22/M/J/16

6 Identify two different selection statements that you can use when writing pseudocode.

O levels COMPUTER SCIENCE 2210/22/M/J/16

5 A programmer writes a program to store a patient’s temperature every hour for a day. State the data structure that would be most suitable to use and give the reason for your choice.

O levels COMPUTER SCIENCE 2210/22/M/J/16

4 Four statement types and four examples are shown below. Draw a line to connect each statement type to the correct example.

O levels COMPUTER SCIENCE 2210/22/M/J/16

3 The flowchart below calculates the number of tins of paint required to paint walls. The flowchart inputs the height and width of a wall in metres, the number of doors and the number of windows. A value of –1 for the height stops the input.

O levels COMPUTER SCIENCE 2210/22/M/J/16

2 Read this section of program code that inputs 10 positive numbers and then outputs the total. 1 Total = 0 2 Counter = 0 3 REPEAT 4 INPUT Num 5 Total = Total + Num 6 PRINT Total 7 Counter = Counter + 1 8 UNTIL Counter = 10 This code works, but it

O levels COMPUTER SCIENCE 2210/22/M/J/16

1 (a) All variables, constants and other identifiers should have meaningful names. (i) For three of the variables that you have used in Task 2, state the name, type and its use.

O levels COMPUTER SCIENCE 2210/22/M/J/16

11 Describe the use of structure and presentation in a HTML document.

O levels COMPUTER SCIENCE 2210/12/M/J/16

10 There are six descriptions in the table below. Complete the table below by writing the correct storage device or media in the box next to each description

O levels COMPUTER SCIENCE 2210/12/M/J/16

9 In the following barcode, each binary number is made up of seven bars. Each bar is black or grey. A black bar is interpreted as a “1” and a grey bar is interpreted as a “0”. (a) Write the binary numbers that would be produced from this barcode:

O levels COMPUTER SCIENCE 2210/12/M/J/16

8 (a) Five statements and three types of software are shown below. Draw lines to connect each statement with the correct type of software.

O levels COMPUTER SCIENCE 2210/12/M/J/16

7 (a)Complete the truth table for this logic circuit.(b) Draw a logic circuit corresponding to the following logic statement: X = 1 if ( ( A is 1 OR B is 1 ) AND ( A is 1 AND B is 1 ) ) OR ( C is NOT 1 )

O levels COMPUTER SCIENCE 2210/12/M/J/16

6 (a) Three descriptions of data transmission are given below. Tick (✓) the appropriate box in each table to show the: • type of transmission • method of transmission Description 1: Data is transmitted several bits at a time down several wires in both

O levels COMPUTER SCIENCE 2210/12/M/J/16

5 Six descriptions and six devices are shown below. Draw a line to link each description to the correct device.

O levels COMPUTER SCIENCE 2210/12/M/J/16

4 Nigel wants to send a large text file electronically to Mashuda. (a) Describe how the size of the text file can be reduced.

O levels COMPUTER SCIENCE 2210/12/M/J/16

3 (a) Convert the following hexadecimal number into 12-bit binary: 4 A F [3] (b) The 2016 Olympic Games will be held in Rio de Janeiro. A timer that counts down to the opening of the Games is shown on a microprocessor-controlled display. The number of h

O levels COMPUTER SCIENCE 2210/12/M/J/16

2 Motion sensors are used in a security system to detect intruders. Name three other sensors that could be used in the following applications. Give a different type of sensor for each application.

O levels COMPUTER SCIENCE 2210/12/M/J/16

1 Complete the following by writing either compiler, interpreter or assembler in the spaces provided.

O levels COMPUTER SCIENCE 2210/12/M/J/16

6 A picture gallery owner has decided to set up a database to keep information about the pictures he has for sale. The database table, PICTURE, will contain the following fields: Title; Artist; Description; Catalogue Number; Size (area in square centimetr

O levels COMPUTER SCIENCE 2210/22/O/N/15

5 Identify two different conditional statements that you can use when writing pseudocode.

O levels COMPUTER SCIENCE 2210/22/O/N/15

5 Identify two different conditional statements that you can use when writing pseudocode.

O levels COMPUTER SCIENCE 2210/22/O/N/15

4 A routine checks the weight of melons to be sold in a supermarket. Melons weighing under 0.5 kilograms are rejected and melons weighing over 2 kilograms are also rejected. Give an example of each type of test data for this routine.

O levels COMPUTER SCIENCE 2210/22/O/N/15

3 (a) The flowchart inputs an integer. The predefined function DIV gives the integer result of the division, e.g. Y 10 DIV 3 gives the value Y = 3. The predefined function MOD gives the value of the remainder, e.g. Y 10 MOD 3 gives the value Y = 1

O levels COMPUTER SCIENCE 2210/22/O/N/15

2 Read this section of program code that should input 50 numbers and then output the average. 1 Total = 0 2 For Counter = 1 TO 50 3 INPUT Num 4 Total = Total + 1 5 Counter = Counter + 1 6 Average = Total/Counter 7 NEXT Counter 8 PRINT Average The

O levels COMPUTER SCIENCE 2210/22/O/N/15

1 (a) All variables, constants and other identifiers should have meaningful names. (i) When you performed the tasks, you used variables. Write suitable declarations for two of these. State what you used each one for.

O levels COMPUTER SCIENCE 2210/22/O/N/15

9 A remote-controlled model car contains RAM, ROM and a solid state drive. The car receives radio signals from its remote control. It can only receive radio signals of a certain frequency. The manufacturer sets this frequency and the owner cannot change i

O levels COMPUTER SCIENCE 2210/12/O/N/15

8 The steps to print a document using a laser printer are shown in the table below. Put each step in the correct order. The first step has been done for you.

O levels COMPUTER SCIENCE 2210/12/O/N/15

7 (a) Check digits are used to ensure the accuracy of input data. A 7-digit code number has an extra digit on the right, called the check digit

O levels COMPUTER SCIENCE 2210/12/O/N/15

6 (a) Explain what is meant by HTML (b) HTML uses both structure and presentation. Describe what is meant by the two terms.

O levels COMPUTER SCIENCE 2210/12/O/N/15

5 A security system uses sensors, a camera and a microprocessor to capture images of each person entering a large shopping mall. (a) Describe how the sensors, camera and microprocessor interact to identify certain people entering the mall.

O levels COMPUTER SCIENCE 2210/12/O/N/15

4 (a) (i) Convert the following two hexadecimal numbers into binary:(ii) Now perform the AND (logic) operation on each corresponding pair of binary bits in the two numbers from part (i).

O levels COMPUTER SCIENCE 2210/12/O/N/15

3 The flowchart on the opposite page shows what happens when the barcode on a product is scanned at the checkout in a supermarket. The barcodes are used in an automatic stock control system. Several of the statements in the flowchart are missing. Using it

O levels COMPUTER SCIENCE 2210/12/O/N/15

2 Seven computer terms and seven descriptions are shown below. Draw a line to link each computer term to its most appropriate description.

O levels COMPUTER SCIENCE 2210/12/O/N/15

1 There are a number of security risks associated with using the Internet. Name three of these risks. For each, state why it is a risk and describe how the risk can be minimised.

O levels COMPUTER SCIENCE 2210/12/O/N/15

6 A database, MARKS, was set up to record the test results for a class of students. Part of the database is shown below.(a) Give the number of fields that are in each record.

O levels COMPUTER SCIENCE 2210/22/M/J/15

5 (a) Write an algorithm, using pseudocode and a FOR … TO … NEXT loop structure, to input 1000 numbers into an array.

O levels COMPUTER SCIENCE 2210/22/M/J/15

4 Four programming concepts and four examples of programming code are shown below. Draw a line to link each programming concept to the correct example of programming code

O levels COMPUTER SCIENCE 2210/22/M/J/15

3 (a) The flowchart below inputs six single digit numbers. The predefined function MOD gives the value of the remainder, for example, Y ← 10 MOD 3 gives the value Y = 1

O levels COMPUTER SCIENCE 2210/22/M/J/15

2 Read this section of program code that should input 30 positive numbers and then output the largest number input. 1 Large = 9999 2 Counter = 0 3 WHILE Counter > 30

O levels COMPUTER SCIENCE 2210/22/M/J/15

1 (a) All variables, constants and other identifiers should have meaningful names. (i) Declare the array to store the pupils’ names.

O levels COMPUTER SCIENCE 2210/22/M/J/15

10 Letters from the alphabet are represented in a computer by the following denary (base 10) values: A = 97 G = 103 I = 105 L = 108 N = 110 The word “A L I G N” is stored as: 97 108 105 103 110 (a) Convert each of the five values to binary. The fir

O levels COMPUTER SCIENCE 2210/12/M/J/15

9 (a) Five statements about interpreters and compilers are shown in the table below. Study each statement. Tick (✓) to show whether the statement refers to an interpreter or to a compiler.

O levels COMPUTER SCIENCE 2210/12/M/J/15

8 Five computing terms are described below. Write the name of the term being described. Software that anyone can download for free from the Internet and then use without having to pay any fees. The usual copyright laws apply and a user license is importan

O levels COMPUTER SCIENCE 2210/12/M/J/15

7 (a) Street lighting is controlled automatically. A light sensor and a microprocessor are used to decide when to switch each street light on or off. Describe how the sensor, microprocessor and light interact to switch the street light on or off. Includ

O levels COMPUTER SCIENCE 2210/12/M/J/15

6 A gas fire has a safety circuit made up of logic gates. It generates an alarm (X = 1) in response to certain conditions. Input Description Binary value Conditions G gas pressure 1 gas pressure is correct 0 gas pressure is too high C carbon monoxide leve

O levels COMPUTER SCIENCE 2210/12/M/J/15

5 Parity checks are often used to check for errors that may occur during data transmission. (a) A system uses even parity. Tick (✓) to show whether the following three bytes have been transmitted correctly or incorrectly.

O levels COMPUTER SCIENCE 2210/12/M/J/15

4 (a) State what is meant by the term SSL.b) The following stages take place when a user wishes to access a secure website. Put each stage in sequence by writing the numbers 1 to 6 in the column on the right. The first one has been done for you.

O levels COMPUTER SCIENCE 2210/12/M/J/15

3 Four input devices, four descriptions and four applications are shown below. Draw a line to connect each input device to its correct description. Then connect each description to its correct application. Input device Description Application barcode read

O levels COMPUTER SCIENCE 2210/12/M/J/15

2 The majority of mobile phones use touch screens. Three common technologies are used by different mobile phone manufacturers. Choose one of the following mobile phone technologies: • resistive • capacitive • infrared Chosen technology

O levels COMPUTER SCIENCE 2210/12/M/J/15

1 (a) Four statements about cookies are shown in the table below. Study each statement. Tick (✓) to show whether the statement is true or false. Statement True False they are a form of spyware they are used only in advertising they are used to track bro

O levels COMPUTER SCIENCE 2210/12/M/J/15

4 (a) Identify and explain two ways Neil and Jin could improve QC’s cash flow.

O levels BUSINESS 11_7115_22_2019_1.2

Neil and Jin need to tell employees about the new service. Identify and explain one advantage and one disadvantage of using email for this communication.

O levels BUSINESS 11_7115_22_2019_1.2

Neil and the part-time employees are both stakeholders in QC. Identify and explain: 2 (a) • one objective that will be the same for both these stakeholders • one objective for Neil that will conflict with an objective of the part-time employees.

O levels BUSINESS 11_7115_22_2019_1.2

1 (a) Identify and explain two ways QC can create added value for its new service.

O levels BUSINESS 11_7115_22_2019_1.2

4 (a) Calculate: (i) The total cost per month of producing 100 items of furniture.] (ii) The average cost of 1 piece of furniture. Explain how total cost and average cost will change if the output is increased to 200 items of furniture per month.

O levels BUSINESS 06_7115_22_2019_1.1

Identify and explain how two stakeholder groups of WA are likely to be affected by the reduction in profit in 2018.

O levels BUSINESS 06_7115_22_2019_1.1

2 (a) Identify and explain two examples of tertiary sector businesses that help WA to be successfu

O levels BUSINESS 06_7115_22_2019_1.1

1 (a) Identify and explain one advantage and one disadvantage to WA of developing new products.

O levels BUSINESS 06_7115_22_2019_1.1

George has worked in a small flower shop for 10 years. He does not like the autocratic leadership style of his manager and wants to leave

O levels BUSINESS 06_7115_12_2019_1.1

REW has won many awards for the design and style of its carpets and rugs. All the wool it uses is from local suppliers. REW’s objective for this year is to survive and remain in business

O levels BUSINESS 06_7115_12_2019_1.1

JNK makes pottery including plates and bowls for the mass market, using batch production. Quality control is important. JNK has 30 unskilled employees

O levels BUSINESS 06_7115_12_2019_1.1

PLK is a social enterprise which offers training to young people who leave school with no qualifications. The young people are trained by PLK chefs to prepare food which is sold at local 1 markets or sporting event

O levels BUSINESS 06_7115_12_2019_1.1

) Identify and explain two sources of finance PP could use for its expansionConsider the benefits and drawbacks to country Z if PP decides to locate a factory there. Recommend whether the government of country Z should allow PP to set up a factory. Justif

O levels BUSINESS 11_7115_22_2018_1.1

Identify and explain one advantage and one disadvantage of Peter delegating tasks to the new Operations manager.

O levels BUSINESS 11_7115_22_2018_1.1

dentify and explain two methods of primary research PP could use to research the market in country Z.

O levels BUSINESS 11_7115_22_2018_1.1

1 (a) Identify and explain two methods PP could use to improve the quality of its products

O levels BUSINESS 11_7115_22_2018_1.1

Bakin Group (BG) is a limited company. It has 3 holiday parks that offer families holiday accommodation and activities. BG aims to look after its customers’ needs 24 hours a day.

O levels BUSINESS 11_7115_12_2018_1.1

TRB is a small business in the secondary sector. TRB assembles computers. All components, except for the battery and glass for the screen, are imported from other countries.

O levels BUSINESS 11_7115_12_2018_1.1

FTT is a social enterprise. It sells its high quality fair-trade coffee beans to retailers in country P. Being ethical is important to FTT. It provides local people with information about micro-finance

O levels BUSINESS 11_7115_12_2018_1.1

M&R Motors has 2 car showrooms. It buys old cars and repairs them before selling them to its customers. M&R is always trying to increase added value.

O levels BUSINESS 11_7115_12_2018_1.1

Identify and explain two reasons why cash flow forecasting is important to Hilda.

O levels BUSINESS 06_7115_22_2018_1.1

Identify and explain four economies of scale DH could benefit from when it takes over a competitor.

O levels BUSINESS 06_7115_22_2018_1.1

) Explain the externalities of each of the following: External cost of large amounts of litter left on the beach:

O levels BUSINESS 06_7115_22_2018_1.1

1 (a) Refer to Appendix 1. Identify and explain Hilda’s span of control and DH’s chain of command.

O levels BUSINESS 06_7115_22_2018_1.1

JKL uses job production to make clocks. JKL buys all its raw materials locally and exports 60% of its products. The business has high fixed costs. JKL has 30 skilled employees. Many of them work 4 part-time and delegation is encouraged. All workers receiv

O levels BUSINESS 06_7115_12_2018_1.1

DPC operates 200 takeaway pizza shops. Over 75% of its pizzas are ordered through e-commerce. The Managing Director thinks 2017 was a successful year. She said: ‘Looking ahead,

O levels BUSINESS 06_7115_12_2018_1.1

JSF is a business in the private sector. It has 50 production workers who operate machines. JSF makes a range of household products including towels and bed sheets.

O levels BUSINESS 06_7115_12_2018_1.1

Adele started a dance school five years ago. Every year Adele pays herself a salary and makes $1000 profit. The school offers a range of dance and exercise classes for children

O levels BUSINESS 06_7115_12_2018_1.1

4 (a) Identify and explain two problems for GS of having a high level of invento(b) Do you think GS will be as successful as other similar businesses? Justify your answer using the data in Appendix 3 and calculate appropriate ratios.

O levels BUSINESS 7115/22/O/N/17

3 (a) Identify and explain four characteristics the partners should include in the person (job) specification when recruiting the new employees

O levels BUSINESS 7115/22/O/N/17

2 (a) Identify and explain two ways GS can increase added valueConsider the following three pricing strategies GS could use when selling plants and trees to customers.

O levels BUSINESS 7115/22/O/N/17

(a) Identify and explain one advantage and one disadvantage of GS being a partnership.

O levels BUSINESS 7115/22/O/N/17

VIS provides a range of insurance services including insurance for cars and electrical products. Last year retained profit decreased. The Managing Director blames higher taxation and also thinks 4 that some markets have become more competitive.

O levels BUSINESS 11_7115_12_2017_1.3

Yanis owns a busy restaurant in the city centre. He employs 4 skilled chefs and 6 workers to serve in the restaurant

O levels BUSINESS 11_7115_12_2017_1.3

CGM makes high quality shoes using job production. The production method makes use of specialisation.

O levels BUSINESS 11_7115_12_2017_1.3

FlyAway is an airline business. It is in the tertiary sector. It offers low-price flights for business customers in country J. Customers have to pay extra for luggage and food on the flight.

O levels BUSINESS 11_7115_12_2017_1.3

) Fizz Bomm is in the development stage of the product life cycle. Identify and explain four other stages of Fizz Bomm’s product life cycle.

O levels BUSINESS 7115/22/M/J/17

Identify and explain one advantage and one disadvantage to CC if it changes to a public limited company

O levels BUSINESS 7115/22/M/J/17

Identify and explain two reasons why on-the-job training is important for new employees at CC.

O levels BUSINESS 7115/22/M/J/17

) Identify two financial statements the directors will need to see before expanding CC. Explain why they will want to see each of these statements.

O levels BUSINESS 7115/22/M/J/17

Steppa is a shoe manufacturer in the private sector. Steppa has 200 employees who all receive a high hourly wage rate. The Human Resources Director said:

O levels BUSINESS 06_7115_12_2017_1.4

Five years ago Manisha started making cakes for celebrations, such as weddings and birthdays, from her home. Now she has a small shop and 3 employees.

O levels BUSINESS 06_7115_12_2017_1.4

LWM makes car tyres in 15 different sizes using batch production. Last year LWM sold 60 million tyres including 40 million tyres of its best-selling size

O levels BUSINESS 06_7115_12_2017_1.4

Cheung owns a small retail shop in the city centre selling fashion clothing for children. As it is a competitive market, Cheung knows market research is important.

O levels BUSINESS 06_7115_12_2017_1.4

Identify and explain two reasons why market research is important to GJ before starting the new service.

O levels BUSINESS 11_7115_22_2018_1.1

Ghaziz and Jasmin plan to expand their business. Identify and explain one economy of scale and one diseconomy of scale for the business as it expands.

O levels BUSINESS 11_7115_22_2018_1.1

Calculate the break-even level of output for the house cleaning service using the information in Appendix 1.

O levels BUSINESS 11_7115_22_2018_1.1

Identify and explain one advantage and one disadvantage to Ghaziz and Jasmin of being in a business partnership.

O levels BUSINESS 11_7115_22_2018_1.1

Moeen and Ali plan to start up a small luxury hotel in the centre of a city in country R. They have a budget of $30 000 to pay for all costs. After researching different types of business organisation, 4 as shown in Table 2, Moeen thinks the hotel should

O levels BUSINESS 11_7115_12_2018_1.1

TKF makes furniture such as beds and tables using job production. TKF has 3 part-time office employees, 8 production workers and 1 manager who is expected to carry out quality control

O levels BUSINESS 11_7115_12_2018_1.1

APQ is a multinational company. It makes chemicals that are sold to farmers which help increase the amount of food produced. I

O levels BUSINESS 11_7115_12_2018_1.1

4 (a) The Government has increased interest rates to reduce inflation. Identify and explain two ways an increase in interest rates might affect FF.

O levels BUSINESS 06_7115_22_2018_1.1

3 (a) Identify four stakeholder groups who would want to see FF’s accounts and explain why each group would want to see them.

O levels BUSINESS 06_7115_22_2018_1.1

Identify and explain two possible benefits to FF from changes in IT. See Appendix 1. To expand, FF needs to attract new customers. Consider the following three methods of market research. Which method do you think will be most effective in identifying the

O levels BUSINESS 06_7115_22_2018_1.1

1 (a) Identify and explain two possible reasons why Thao and Liang have set ‘excellent customer service’ as the main business objective.

O levels BUSINESS 06_7115_22_2018_1.1

KLG is based in country X. It specialises in making electrical parts which it sells to washing machine manufacturers in country X. The Managing Director is planning to relocate to country Y, which is 4 a low-cost country. She said: ‘This will allow us to

O levels BUSINESS 06_7115_12_2016_1.1

Alex and Raul are business partners. They started a bicycle repair business with their own savings as the bank would not give them a loan. Raul does most of the repair work, while Alex manages 3 the accounts. Alex is surprised that the business has made a

O levels BUSINESS 06_7115_12_2016_1.1

F&G is a leading fashion retailer. It has 20 shops in country C. The business uses market segmentation. Its target market is men aged between 25 and 40 years old. The Marketing Director has been looking at the marketing data shown in Table 1. She is worri

O levels BUSINESS 06_7115_12_2016_1.1

Saltan makes a range of cars. The level of inventory is too high so it plans to decrease production at its factory. Employees were told the business needs to reduce the size of its workforce as 1competition is increasing. The trade union is not happy that

O levels BUSINESS 06_7115_12_2016_1.1

4 (a) Identify and explain the possible effects on Rafael’s business of each of the following. (i) Import quota on m otorbikes: (b) Rafael wants to open another showroom in Main City. He has two options as outlined in Appendix 3. Consider the advantages

O levels BUSINESS 7115/22/O/N/15

3 (a) Complete the two different forms of presentation shown below for the population data in Appendix 1. Explain the advantages of each form of presentation. First form of presentation:

O levels BUSINESS 7115/22/O/N/15

2 (a) Rafael’s son wants to know more about motivating employees. Identify and explain four levels of Maslow’s hierarchy of needs as they might apply to Rafael’s employees.

O levels BUSINESS 7115/22/O/N/15

1 (a) RRM is a small business. Identify and explain two reasons why RRM might remain small.(b) Rafael thinks he could increase his sales by using market segmentation. Consider the advantages and disadvantages of each of the following methods to segment th

O levels BUSINESS 7115/22/O/N/15

4 Nellis is a public limited company. It specialises in building large luxury houses. Over the past 3 years its profits have increased as the country is experiencing an economic boom. ‘It’s not all good news – the Government has announced plans to increas

O levels BUSINESS 7115/12/O/N/15

3 NCE manufactures cars in 4 factories using flow production. NCE’s Human Resources Director thinks good induction training helps achieve high productivity. Factory X is its most efficient factory. Last year the size of the new car market fell by 20%. NCE

O levels BUSINESS 7115/12/O/N/15

2 CLW makes wood furniture, including chairs and tables. Demand has risen quickly over the past 3 years and the business needs to increase the scale of production at its factory. The factory is located near the city centre in an area of low unemployment.

O levels BUSINESS 7115/12/O/N/15

1 Walt owns a company which has developed a new computer game for adults. A focus group report shows customers like it. Walt has been considering the marketing mix, including the packaging for this product which is likely to be sold in many countries. ‘I

O levels BUSINESS 7115/12/O/N/15

4 (a) The Government of country X has recently increased interest rates. Identify and explain two ways an increase in interest rates might affect FF. Way 1:

O levels BUSINESS 7115/22/M/J/15

3 (a) Samah and Selina are considering buying ingredients from another supplier called ABC (see Appendix 2). Identify and explain one advantage and one disadvantage to FF of changing to ABC. Advantage

O levels BUSINESS 7115/22/M/J/15

2 (a) Identify and explain two benefits to FF of targeting a specific market segment for its products.

O levels BUSINESS 7115/22/M/J/15

1 (a) Samah and Selina wrote a business plan before FF started trading 5 years ago. Identify and explain two ways their business plan might have helped to make the business successful.

O levels BUSINESS 7115/22/M/J/15

4 A2Z is a small but successful airline company in country B, providing flights for business people. The management of A2Z wants the business to expand. It will have to buy more aeroplanes and recruit more airline pilots. The Human Resources manager has p

O levels BUSINESS 7115/12/M/J/15

3 Mabel wants to set up her own hairdressing business. She will need to build good customer relationships. She has done some secondary market research to find out possible demand and what methods of promotion to use. She has decided to buy her inventory (

O levels BUSINESS 7115/12/M/J/15

2 Alkin is a multinational company. It manufactures breakfast food products including many leading brands of cereal. Alkin plans to start selling in country Z, which is a fast-growing market. Alkin plans to form a joint venture with a local business, base

O levels BUSINESS 7115/12/M/J/15

1 PJK makes a range of luxury sports watches. Each watch is handmade by skilled workers. Quality assurance is important. The Operations Director has been looking at costs and prices as he wants to do a break-even analysis. This data is shown in Table 1. H

O levels BUSINESS 7115/12/M/J/15

40 A nucleus of uranium U 238 92 decays to thorium by emitting an alpha-particle. What is the resulting thorium nucleus?

O levels PHYSICS 5054/12/O/N/16

39 A freshly made sample of radioactive material gives a count rate of 8000 counts per minute. After 20 days, it gives a count rate of 500 counts per minute. What is the half-life of the material?

O levels PHYSICS 5054/12/O/N/16

38 A resistor of constant resistance and a thermistor are connected in series with a battery. A voltmeter is connected in parallel with the resistor.

O levels PHYSICS 5054/12/O/N/16

37 A magnet moves up and down above a coil of wire. The bottom of the magnet moves up and down between P and R. Where is the bottom of the magnet when there is no induced electromotive force (e.m.f.) in the coil?

O levels PHYSICS 5054/12/O/N/16

36 A current-carrying wire lies between the poles of two magnets, as shown. N S wire direction of current What is the direction of the force on the wire? A into the plane of the paper B out of the plane of the paper

O levels PHYSICS 5054/12/O/N/16

35 The headlamp circuit in a car includes a 7A fuse. What is the purpose of the fuse? A It increases the resistance of the circuit. B It makes it easier for the current to flow. C It protects the wiring from overheating. D It reduces the voltage across th

O levels PHYSICS 5054/12/O/N/16

34 Resistors of different resistances are connected to a power supply in either a parallel circuit or a series circuit. Which statement is correct?

O levels PHYSICS 5054/12/O/N/16

33 An ammeter and a voltmeter are connected into the circuit shown when determining the power produced by a heater.

O levels PHYSICS 5054/12/O/N/16

32 A positively charged metal sphere is placed midway between two previously uncharged metal rods, one of which is connected to earth. Which diagram shows the charges on the rods?

O levels PHYSICS 5054/12/O/N/16

31 Delicate instruments are often placed in a box to screen them from stray magnetic fields. What is the material used for the box and why is it chosen? A Aluminium is used because it is a non-magnetic material. B Copper is used because it has a low elect

O levels PHYSICS 5054/12/O/N/16

30 A man stands between two tall buildings, P and Q. The diagram is not drawn to scale. He is 50 m from P and 200 m from Q.

O levels PHYSICS 5054/12/O/N/16

29 Sound travels at different speeds in solids, liquids and gases. Which list shows these states of matter in order of increasing speed of sound (slowest to fastest)? A gas → liquid → solid B gas → solid → liquid C liquid → solid → gas D solid → liquid →

O levels PHYSICS 5054/12/O/N/16

28 A girl is long-sighted. Which statement is correct? A She sees close objects less clearly than a person with normal vision. B She sees distant objects more clearly than a person with normal vision. C The fault is corrected with a diverging lens. D The

O levels PHYSICS 5054/12/O/N/16

27 A lens is used to produce a magnified image, as shown in the scale diagram.

O levels PHYSICS 5054/12/O/N/16

26 The diagram shows the surface of water as a wave passes across a ripple tank.

O levels PHYSICS 5054/12/O/N/16

25 Which statement about waves is correct? A All electromagnetic waves are transverse waves. B All transverse waves travel at 300 000 000 m / s. C Longitudinal waves cannot be refracted. D Water waves are longitudinal waves.

O levels PHYSICS 5054/12/O/N/16

24 In which states of matter does convection occur? A gases, liquids and solids B gases and liquids only C gases and solids only D liquids and solids only

O levels PHYSICS 5054/12/O/N/16

23 What makes a clinical thermometer suitable for measuring small changes in body temperature? A The amount of liquid in the bulb is small. B The bore of the capillary tube is narrow. C The capillary tube is long. D The glass bulb has a thin wall.

O levels PHYSICS 5054/12/O/N/16

22 The thermal energy produced by an electric heater in three minutes is used to melt wax. The wax is initially at its melting point of 60 °C. The specific latent heat of the wax is 220 J / g. The heater supplies 7700 J of thermal energy to the wax. How m

O levels PHYSICS 5054/12/O/N/16

21 One kilogram of water needs more thermal energy to raise its temperature by 1 °C than one kilogram of copper. Why is this? A copper has a higher specific heat capacity than water B copper has a lower specific heat capacity than water C copper is a bett

O levels PHYSICS 5054/12/O/N/16

20 A sample of liquid at 100°C is allowed to cool to a room temperature of 20 °C. The diagram shows how the temperature changes with time during the cooling process. At which time does the sample become completely solid?

O levels PHYSICS 5054/12/O/N/16

19 A piece of paper torn out of an exercise book is shown. Which process is being described? A conduction B convection C evaporation D radiation

O levels PHYSICS 5054/12/O/N/16

18 A gas expands slowly and its temperature remains constant. What happens to the gas molecules? A They move further apart and their average speed decreases. B They move further apart and their average speed increases. C They move further apart and their

O levels PHYSICS 5054/12/O/N/16

17 The pressure of the gas supply in the laboratory is measured using a manometer. Which distance gives the pressure of the gas above atmospheric pressure?

O levels PHYSICS 5054/12/O/N/16

16 Which expression gives the efficiency of an a.c. generator? A total energy input electricalenergy output B thermal energy output electricalenergy output C electrical energy input total energy output D total energy input thermal energy output

O levels PHYSICS 5054/12/O/N/16

15 An electric motor is used to operate a lift (elevator). The motor does 140 000 J of work in 70s. What is the output power of the motor? A 0.50 milliwatts B 2.0 watts C 2.0 kilowatts

O levels PHYSICS 5054/12/O/N/16

14 A workman rolls a barrel of weight 2000N up a plank of length 2.0 m and onto a lorry. The back of the lorry is 0.80 m above the horizontal surface of the road.

O levels PHYSICS 5054/12/O/N/16

13 Which force does no work? A the force from a car’s engine that causes the car to accelerate B the force that causes a box to slide over a rough horizontal surface C the force that causes a satellite to move in a circular orbit D the force that causes a

O levels PHYSICS 5054/12/O/N/16

12 Which power stations all rely on renewable sources of energy? A hydroelectric, oil-fired, solar power stations B hydroelectric, solar, wind power stations C hydroelectric, oil-fired, wind power stations D oil-fired, wind, solar power stations

O levels PHYSICS 5054/12/O/N/16

11 Three objects P, Q and R have different masses and different speeds, as shown in the table. kg mass m/s speed P 1.0 3.0 Q 2.0 2.0 R 5.0 1.0 What is the order of increasing kinetic energy (smallest first) of the objects?

O levels PHYSICS 5054/12/O/N/16

10 Two forces, X and Y, act on an object and produce a resultant force. The scale diagram represents the sizes and directions of forces X and Y. force Y force X Force Z balances the resultant force due to X and Y and keeps the object stationary. Which arr

O levels PHYSICS 5054/12/O/N/16

9 A man with an open parachute is falling to Earth at constant speed. The following forces are acting. P the upward force of the parachute on the man. Q the upward force of the man on the Earth. R the downward force of the Earth on the parachute. S the do

O levels PHYSICS 5054/12/O/N/16

8 The density of gold is 19g / cm3 . A gold coin is 2.0 mm thick. Each face of the coin has an area of 4.5 cm2 .

O levels PHYSICS 5054/12/O/N/16

7 A block is hung on a spring balance. The marker inside the balance is pulled down by the block. marker What can the position of the marker be used to determine?

O levels PHYSICS 5054/12/O/N/16

6 The diagram shows a car going around a circular track at constant speed. Which arrow shows the direction of the resultant force on the car?

O levels PHYSICS 5054/12/O/N/16

5 A force of 20N acts on an object of mass 5.0 kg in the forward direction. A second force also acts on the object. The forward acceleration of the object is 3.0m / s2 . What is the size and direction of the second force? size of force /N direction of fo

O levels PHYSICS 5054/12/O/N/16

4 The graph shows a distance-time graph for a car travelling in a straight line. In which region is the car decelerating?

O levels PHYSICS 5054/12/O/N/16

3 Two aluminium spheres P and Q, of masses 0.50 kg and 1.0 kg respectively, are released at the same time from the same height. Why do they have the same acceleration? A The density of P is equal to the density of Q. B The force on P is equal to the force

O levels PHYSICS 5054/12/O/N/16

2 A skydiver falls from rest through the air and reaches terminal velocity. What is the acceleration of the skydiver during his fall? A constant at 0 m / s2 B constant at 10 m / s2 C starting at 0m / s2 and increasing to 10 m / s2 D starting at 10 m / s2

O levels PHYSICS 5054/12/O/N/16

1 A length of copper wire is labelled ‘length 30 m’ and ‘diameter 0.50 mm’. Which instruments are most suitable to measure accurately the length and the diameter of the wire? length diameter A rule calipers B rule micrometer C tape calipers D tape microm

O levels PHYSICS 5054/12/O/N/16

10 A laser produces a beam of red light. (a) The red light from the laser has a frequency of 4.3 × 1014Hz. (i) State the speed of light in air. (ii) Calculate the wavelength of this red light in air. wavelength =

O levels PHYSICS 5054/22/O/N/16

9 A vertical solenoid (long coil) with an iron core is held in a wooden clamp above a laboratory bench. The solenoid is connected in series with a battery, a switch S, an ammeter and a variable resistor. There is a voltmeter in parallel with the solenoid.

O levels PHYSICS 5054/22/O/N/16

8 A spring is taken from a drawer in a physics laboratory. (a) Fig. 8.1 is the extension-load graph for the spring. 12 10 8 6 4 2 0 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 extension / cm X load /N Fig. 8.1 (i) Using Fig. 8.1, determine the load on the spring w

O levels PHYSICS 5054/22/O/N/16

7 Plutonium-238 is a radioactive isotope that decays by alpha-particle emission. It also emits gamma-rays. (a) The nuclide notation for plutonium-238 is 238 94Pu. Describe the structure and composition of a neutral atom of plutonium-238.

O levels PHYSICS 5054/22/O/N/16

6 In a cathode-ray oscilloscope (c.r.o.), a beam of electrons is produced by a filament at one end of an evacuated glass tube. The electrons are then accelerated and strike a screen at the other end of the tube. (a) Describe how the electrons are produced

O levels PHYSICS 5054/22/O/N/16

5 Gas is trapped in a syringe by a piston. Fig. 5.1 shows that the narrow end of the syringe is sealed. syringe sealed end gas piston Fig. 5.1 When the gas is at a pressure of 1.1 × 105Pa, it occupies a volume of 40cm3. (a) Explain, in terms of the molecu

O levels PHYSICS 5054/22/O/N/16

4 Fig. 4.1 shows a kettle containing water placed on the burner of a gas cooker. Fig. 4.1 The gas burner is lit at time t = 0. At t = 250s the temperature of the water is 100°C, the boiling point of water. (a) State what is meant by boiling point.

O levels PHYSICS 5054/22/O/N/16

3 When the lid of a freezer is opened, it pivots about the hinge at the back of the freezer. The handle is at the front. Fig. 3.1 is a side view of the freezer. lid lid handle 0.70 m F hinge Fig. 3.1 The handle is 0.70m from the hinge. The lid has a mass

O levels PHYSICS 5054/22/O/N/16

2 A skateboarder of mass 45kg is at the top of a ramp. Fig. 2.1 shows the skateboarder and the ramp. 1.8 m Fig. 2.1 (not to scale) (a) The skateboarder moves off and she descends vertically through 1.8m. The gravitational field strength g is 10N/kg. (i)

O levels PHYSICS 5054/22/O/N/16

1 A skier sets off from rest and accelerates uniformly at 3.4m/ s2 in a straight line for 5.0s. (a) Calculate the speed of the skier after 5.0s. speed = ...........................................................[2] (b) At 5.0s, the skier stops accelerati

O levels PHYSICS 5054/22/O/N/16

4 A student is given a lump of Blu-Tack which he moulds into a cube. The front face of the cube is shown full size in Fig. 4.1. Fig. 4.1 full size (a) By taking measurements from the front face of the cube in Fig. 4.1, determine the volume in cm3 of the B

O levels PHYSICS 5054/42/O/N/16

3 A student investigates current in a diode. voltage current Fig. 3.1 The shape of the student’s graph is shown in Fig. 3.1. (a) The student has a resistor of resistance 330Ω. The resistor has three coloured bands to indicate the value of its resistance,

O levels PHYSICS 5054/42/O/N/16

2 The inner core of a pencil is known as the pencil lead. It is made of carbon, a conductor of electricity. (a) A student measures the resistance of a 12cm length of the lead, as shown in Fig. 2.1.

O levels PHYSICS 5054/42/O/N/16

1 A student is to determine the density of a liquid. She pours the liquid into a measuring cylinder, as shown in Fig. 1.1.

O levels PHYSICS 5054/42/O/N/16

4 Fig. 4.1 shows an empty large reel that was used to hold ribbon. reel central cylinder Fig. 4.1 The central cylinder has a diameter of about 3 cm. Two students use different methods to find the diameter of the central cylinder. (a) One student uses a r

O levels PHYSICS 5054/22/M/J/16

3 A group of students measures forces using a set of bathroom scales. (a) One student measures his weight by standing on the scales, as shown in Fig. 3.1.

O levels PHYSICS 5054/22/M/J/16

2 A student investigates the path of a ray of light through a triangular prism. Fig. 2.1 on page 7 shows the triangular prism placed in the centre of a sheet of white paper. (a) On Fig. 2.1, (i) mark and label P, the mid-point of the side AB of the pris

O levels PHYSICS 5054/22/M/J/16

1 A student investigates the oscillations of a metre rule. (a) The student starts by supporting one end of a heavy rod using a stand, boss and clamp. Fig. 1.1 shows how he assembled the apparatus.

O levels PHYSICS 5054/22/M/J/16

11 Fig. 11.1 represents a nuclear fusion reaction. isotopes of hydrogen particle A particle B 3 1 H 2 1 H Fig. 11.1 At very high temperatures, nuclei of the two isotopes 2 1H and 3 1H fuse together. Energy is produced and two new particles are formed, par

O levels PHYSICS 5054/22/M/J/16

10 (a) Fig. 10.1 shows the basic structure of a cathode-ray oscilloscope (c.r.o.). A cathode B D E F C screen Fig. 10.1 Electrons strike the middle of the screen and a bright spot is produced. (i) On Fig. 10.1, write the names of parts B, D, E and F in

O levels PHYSICS 5054/22/M/J/16

9 Fig. 9.1 is a circuit diagram. 181 301 12V Fig. 9.1 The electromotive force (e.m.f.) of the battery is 12 V. (a) Explain what is meant by electromotive force.

O levels PHYSICS 5054/22/M/J/16

8 A transformer and a diode are used to charge a battery. Fig. 8.1 shows the transformer, which contains a soft-iron core and two coils.

O levels PHYSICS 5054/22/M/J/16

7 An uncharged piece of metal P rests on an insulator. A positively charged rod is placed close to P, as shown in Fig. 7.1. rod insulator Fig. 7.1 (a) State a material that is an electrical insulator. (b) On Fig. 7.1, draw the distribution of charges o

O levels PHYSICS 5054/22/M/J/16

6 Fig. 6.1 shows some of the colours in the visible part of the electromagnetic spectrum. red orange yellow green blue Fig. 6.1 (a) State which colour in Fig. 6.1 has (i) the largest wavelength,

O levels PHYSICS 5054/22/M/J/16

5 A person can focus clearly on objects that are far away, but near objects appear blurred. Fig. 5.1 shows three rays from a point on a near object as they pass through the person’s eye. The refraction of the light as it enters the eye is ignored.

O levels PHYSICS 5054/22/M/J/16

4 A beaker is filled with water and placed on a hot-plate to boil, as shown in Fig. 4.1. The hot-plate is on top of a balance, which measures the mass of water in the beaker.

O levels PHYSICS 5054/22/M/J/16

3 A student has three springs A, B and C. He measures the length of each spring, in turn, when different weights are placed on the end of each spring. His table of results is shown in Fig. 3.1.

O levels PHYSICS 5054/22/M/J/16

2 Fig. 2.1 shows an electric motor lifting a load. electric load motor power supply Fig. 2.1 The load, of weight 5.0 N, is raised through a vertical height of 3.5 m at a constant speed. The efficiency of the electric motor is 0.65 (65%). (a) Calculate th

O levels PHYSICS 5054/22/M/J/16

1 Fig. 1.1 shows the speed-time graph for a car travelling along a horizontal road. (a) On Fig. 1.1, mark and label a point where the car has a non-uniform deceleration. [1] (b) Calculate the deceleration of the car at t = 3.0 s.

O levels PHYSICS 5054/22/M/J/16

40 The diagrams represent the nuclei of three atoms.

O levels PHYSICS 5054/12/M/J/16

39 Which statement about the half-life of a radioactive isotope is correct?

O levels PHYSICS 5054/12/M/J/16

38 Which states the three types of radiation emitted by radioactive isotopes in order of their ionising effect from highest to lowest?

O levels PHYSICS 5054/12/M/J/16

37 Which nucleus is produced when americium-241 Am) 241 95 ( emits an alpha-particle?

O levels PHYSICS 5054/12/M/J/16

36 A potential divider is connected across the terminals of a 6.0V supply.

O levels PHYSICS 5054/12/M/J/16

35 The diagram represents thermionic emission from a metal filament.

O levels PHYSICS 5054/12/M/J/16

34 Electrical power is transmitted by cables over long distances at very high voltages. What are the effects of using a high voltage transmission system?

O levels PHYSICS 5054/12/M/J/16

33 The diagram shows a wire PQ between the N-pole and the S-pole of a magnet. There is a current in the wire in the direction of the arrow.

O levels PHYSICS 5054/12/M/J/16

32 The diagram shows a simple d.c. motor. N S The switch is closed and the coil rotates. Which change makes the coil rotate in the opposite direction and at a faster rate? A increase the current in the coil and increase the number of turns in the coil B r

O levels PHYSICS 5054/12/M/J/16

31 A 100W lamp is switched on for five hours each day for three weeks. The cost of one unit of electricity is $0.24. How much does it cost to run the lamp for this time?

O levels PHYSICS 5054/12/M/J/16

30 The diagram shows the wiring of a three-pin mains plug. There is an error in the diagram.

O levels PHYSICS 5054/12/M/J/16

29 A 6.0V battery is connected to a network containing five identical resistors. A voltmeter has one lead connected to point K as shown. At which point should lead L be connected so that the voltmeter reads 3.0V?

O levels PHYSICS 5054/12/M/J/16

28 Which diagram shows the arrangement of the ammeter and voltmeter to obtain readings to find the power of a lamp?

O levels PHYSICS 5054/12/M/J/16

27 The diagram shows a battery of three 1.5V cells. What is an advantage of this arrangement of cells?

O levels PHYSICS 5054/12/M/J/16

26 How can one volt also be expressed? A one coulomb per ampere B one coulomb per joule C one joule per ampere D one joule per coulomb

O levels PHYSICS 5054/12/M/J/16

25 A charge of 45C flows through an electric appliance in 3.0 minutes. What is the average current in the appliance? A 0.25 A B 4.0 A C 15 A

O levels PHYSICS 5054/12/M/J/16

24 A polythene rod is rubbed with a cloth and the cloth becomes positively charged. Which statement describes the transfer of charge? A Negative charges are transferred from the cloth to the polythene. B Negative charges are transferred from the polythene

O levels PHYSICS 5054/12/M/J/16

23 Four plotting compasses are placed near a bar magnet. You may ignore any effects of the Earth’s magnetic field. One compass appears like this . What is a possible position for this compass?

O levels PHYSICS 5054/12/M/J/16

22 A sound wave travels through air. The lines in the diagram show the positions of layers of air at one particular time. Which distance shows the wavelength of the wave?

O levels PHYSICS 5054/12/M/J/16

21 Light passes from air into a block of glass, as shown.

O levels PHYSICS 5054/12/M/J/16

20 The rays of light from a ray-box pass through three lenses placed at positions 1, 2 and 3.

O levels PHYSICS 5054/12/M/J/16

19 Which length is the focal length of the lens shown in the diagram?

O levels PHYSICS 5054/12/M/J/16

18 The diagram shows light incident on a plane mirror. 40° ray of light P Q mirror Which row gives the angle of reflection and the name of line PQ? angle of reflection the line PQ is called the A 40° normal B 40° reflected ray C 50° normal D 50° reflected

O levels PHYSICS 5054/12/M/J/16

17 A water wave in a ripple tank refracts as it passes from deep water to shallow water. Which properties change as the wave refracts? A frequency and amplitude B frequency and wavelength C speed and frequency D speed and wavelength

O levels PHYSICS 5054/12/M/J/16

16 The diagram shows the inside of a refrigerator. cooling unit When the refrigerator is first switched on, what happens to the air near the cooling unit? the particles of this air the density of this air A become smaller decreases B become smaller incre

O levels PHYSICS 5054/12/M/J/16

15 A slice of bread is placed under a red-hot electric grill to make toast. grill slice of bread How does heat energy reach the bread? A conduction and convection B conduction only C convection and radiation D radiation only

O levels PHYSICS 5054/12/M/J/16

14 The diagram shows two liquid-in-glass thermometers P and Q. liquid liquid P Q The thermometers are identical except that Q has a capillary tube with a larger internal diameter than P. Which thermometer has the larger range and which thermometer has the

O levels PHYSICS 5054/12/M/J/16

13 A gas in a container of fixed volume is heated. What happens to the molecules of the gas? A They collide less frequently. B They expand. C They move faster. D They move further apart.

O levels PHYSICS 5054/12/M/J/16

12 Water of depth 10m exerts a pressure equal to atmospheric pressure. An air bubble rises to the surface of a lake which is 20m deep. When the bubble reaches the surface, its volume is 6.0cm3 . What is the volume of the air bubble at the bottom of the la

O levels PHYSICS 5054/12/M/J/16

11 A block of weight W rests on a side of area A. The gravitational field strength is g. What is the pressure exerted on the ground due to the block?

O levels PHYSICS 5054/12/M/J/16

10 Four beakers contain the same liquid. At which point is the pressure the greatest?

O levels PHYSICS 5054/12/M/J/16

9 A 300N force is applied to a box to move it up a ramp, as shown.How much work is done by the force when moving the box from X to Y?

O levels PHYSICS 5054/12/M/J/16

8 Which process in the Sun produces energy? A burning B nuclear fission C nuclear fusion D radiation

O levels PHYSICS 5054/12/M/J/16

7 Which quantity is a vector? A energy B force C speed D time

O levels PHYSICS 5054/12/M/J/16

6 A uniform plank is pivoted at its mid-point. Two weights are added to the plank, one weight on each side of the pivot in the positions shown.

O levels PHYSICS 5054/12/M/J/16

5 A brick is placed on a newton meter and then on a beam balance.

O levels PHYSICS 5054/12/M/J/16

4 Which property of a body resists change from a state of rest or of motion? A density B mass C volume D weight

O levels PHYSICS 5054/12/M/J/16

3 A car moves in a circle at constant speed. What is the direction of the resultant force acting on the car?

O levels PHYSICS 5054/12/M/J/16

2 A man pulls a sledge of mass 25kg across level ground with a horizontal force of 60N. A constant force of friction of 20N acts on the sledge. What is the acceleration of the sledge?

O levels PHYSICS 5054/12/M/J/16

1 A student determines the circumference of a golf ball. Which instrument gives a reading that is the circumference of the golf ball? A calipers B micrometer C rule D tape

O levels PHYSICS 5054/12/M/J/16

4 A student is asked to determine the resistance R of a resistor. The student is provided with the following apparatus. • the resistor with unknown resistance R • four 1.5 V cells • an ammeter • a voltmeter • connecting leads (a) The student uses on

O levels PHYSICS 5054/42/O/N/15

3 The length of a school laboratory is between 5 m and 6 m. Three students A, B and C are asked to measure the length of the laboratory. (a) Student A is given two metre rules. Describe how he can use these to measure the length of the laboratory.

O levels PHYSICS 5054/42/O/N/15

2 A group of students is asked to determine the diameter of a large inflatable beach ball. One student uses a long piece of string to find the circumference of the ball. He then calculates the diameter. Fig. 2.1 shows the student with the beach ball

O levels PHYSICS 5054/42/O/N/15

1 A student performs an experiment to obtain an accurate value for the focal length of a converging lens. His school has lenses with focal lengths 10 cm and 15 cm. The student is given a lens from a packet labelled ‘focal length 10 cm’. (a) Describe a si

O levels PHYSICS 5054/42/O/N/15

11 The proton number (atomic number) of the element lead is 82. The isotope lead-209 (209 82Pb) is radioactive and decays by the emission of beta-particles. (a) Describe the composition and structure of a neutral atom of lead-209.

O levels PHYSICS 5054/22/O/N/15

10 Thin wire, covered in plastic insulation, is used to make a solenoid (long coil). The solenoid is connected to a sensitive ammeter. Fig. 10.1 shows the N-pole of a steel magnet placed next to the solenoid.

O levels PHYSICS 5054/22/O/N/15

9 Aeroplanes fly at high altitudes where the temperature is well below 0 °C. Ice that forms on an aeroplane can fall to earth and strike the ground. Fig. 9.1 shows a block of ice falling from an aeroplane as it approaches an airport.

O levels PHYSICS 5054/22/O/N/15

8 A spotlight in a television studio is at full brightness. The lamp inside the spotlight is powered by a 230 V supply and the current in the filament of the lamp is 27 A. (a) Calculate the power of the lamp.

O levels PHYSICS 5054/22/O/N/15

7 Light enters a parallel-sided glass block at A. The angle between the side of the block and the ray of light in air is 35°. The light then strikes the edge of the block at B. Fig. 7.1 shows the ray of light and the glass block.

O levels PHYSICS 5054/22/O/N/15

6 A gas is trapped at atmospheric pressure in a cylinder by a piston. The piston is held in a fixed position by a movable rod. Fig. 6.1 shows the cylinder.

O levels PHYSICS 5054/22/O/N/15

5 All thermometers use the value of a physical property to measure temperature. (a) (i) State what makes a physical property suitable for the measurement of temperature.

O levels PHYSICS 5054/22/O/N/15

4 A copper saucepan with a wooden handle contains cold water. The saucepan is placed on a red-hot heating element that is a part of an electric cooker. Fig. 4.1 shows the saucepan on the heating element

O levels PHYSICS 5054/22/O/N/15

3 A very deep tank is used when training sailors to escape from submarines. The tank is cylindrical and open to the air at the top. Fig. 3.1 shows the tank.

O levels PHYSICS 5054/22/O/N/15

2 (a) The surface of a running track is made of rubber. A heavy trolley is pulled on to the track and it exerts a large force on the rubber track. State two effects that this force has on the rubber.

O levels PHYSICS 5054/22/O/N/15

1 Water is transported to a village in a tank pulled by a tractor. Fig. 1.1 shows the tank being pulled by a tractor. water Fig. 1.1 The combined mass of the tractor and the tank is 4100 kg when the tank is empty and 6500 kg when the tank is full of water

O levels PHYSICS 5054/22/O/N/15

40 In the Geiger-Marsden experiment, a beam of alpha-particles is fired at a very thin sheet of gold foil, in a vacuum. What is deduced from this experiment?

O levels PHYSICS 5054/12/O/N/15

39 A radioactive isotope 14C emits beta-particles. A sample of this isotope is left for a period of time that is equal to its half-life. Which two quantities decrease to half of their initial value during this time?

O levels PHYSICS 5054/12/O/N/15

38 In the circuit shown, all lamps are identical. Lamp P lights with normal brightness.

O levels PHYSICS 5054/12/O/N/15

37 The diagram shows an electrical device X connected between a 6V a.c. supply and a 12V lamp

O levels PHYSICS 5054/12/O/N/15

36 Which particles are emitted by the hot filament of a cathode-ray oscilloscope (c.r.o.) and which type of field is used to accelerate them?

O levels PHYSICS 5054/12/O/N/15

35 Electric power cables transmit electrical energy over large distances using high-voltage, alternating current. What are the advantages of using a high voltage and of using an alternating current?

O levels PHYSICS 5054/12/O/N/15

34 An immersion heater is labelled 24V, 120W. What is the current in the heater when it is connected to a 24V supply?

O levels PHYSICS 5054/12/O/N/15

33 A power supply of 18V is connected to three resistors, as shown.

O levels PHYSICS 5054/12/O/N/15

32 P and Q represent two, parallel, straight wires carrying currents into the plane of the paper. P and Q exert a force on each other. Which arrow shows the force on Q?

O levels PHYSICS 5054/12/O/N/15

31 The diagram shows the magnetic field around wire X which carries a current into the paper. X The arrows on the field lines show the direction of the force on

O levels PHYSICS 5054/12/O/N/15

30 A positively charged insulated metal sphere is brought close to an uncharged insulated metal sphere.

O levels PHYSICS 5054/12/O/N/15

29 Which row correctly names an electrical conductor and an insulator? electrical conductor insulator A aluminium iron B iron rubber C plastic aluminium D rubber plastic

O levels PHYSICS 5054/12/O/N/15

28 Which material can be picked up by a magnet? A aluminium B copper C iron D plastic

O levels PHYSICS 5054/12/O/N/15

27 The sound from the siren of a ship is reflected by a cliff. An echo is heard by a sailor on the deck of the ship, 4.0 s after the siren is sounded. The speed of sound in air is 320m/ s. How far from the cliff is the ship?

O levels PHYSICS 5054/12/O/N/15

26 An ultrasound scanner produces an image of an unborn baby. part of scanner unborn baby How does the scanner form an image? A from ultrasound absorbed by the baby B from ultrasound emitted by the baby C from ultrasound reflected by the baby D from ultra

O levels PHYSICS 5054/12/O/N/15

25 A loudspeaker produces a sound wave of frequency 50Hz. The amplitude of the sound wave is increased. What is heard? A a louder sound of a higher pitch B a louder sound of the same pitch C a sound of higher pitch but the same loudness D a sound of the

O levels PHYSICS 5054/12/O/N/15

24 Which statement about red light and blue light is correct? A Red light has a higher frequency than blue light. B Red light has a longer wavelength than blue light. C Red light has the same speed in glass as blue light. D Red light is refracted by a gla

O levels PHYSICS 5054/12/O/N/15

23 In an experiment using a ripple tank, plane wavefronts arrive at a plane surface. plane surface λ Which row correctly describes the waves after they are reflected from the surface?

O levels PHYSICS 5054/12/O/N/15

22 An object is viewed through a converging lens. The diagram shows the paths of two rays from the top of the object to an eye.

O levels PHYSICS 5054/12/O/N/15

21 An echo sounder produces ultrasound of frequency 24kHz. The ultrasound travels in water at a speed of 1.5km/ s. What is the wavelength in water of ultrasound of this frequency?

O levels PHYSICS 5054/12/O/N/15

20 Which statement is correct? A Infra-red radiation cannot travel in a vacuum. B Infra-red radiation cannot travel in solids or in gases. C Infra-red radiation can only travel in a vacuum. D Infra-red radiation can travel in a vacuum and in gases.

O levels PHYSICS 5054/12/O/N/15

19 An insulated beaker contains 300g of water, initially at 30°C. Water at 100°C is added until the temperature of the mixture reaches 50°C. The specific heat capacity of water is 4.2J /(g°C). How much water is added?

O levels PHYSICS 5054/12/O/N/15

18 Some of the liquid in a dish evaporates, as shown in the diagrams. before evaporation after evaporation Which molecules leave the liquid and which molecules in the liquid have greater average kinetic energy?

O levels PHYSICS 5054/12/O/N/15

17 The diagrams represent four thermometers. Which thermometer has the greatest sensitivity and which thermometer has the greatest range?

O levels PHYSICS 5054/12/O/N/15

16 A gas is in a sealed container of constant volume. The gas is heated and the pressure of the gas on the walls of the container increases. How do the particles of the gas cause this increase in pressure?

O levels PHYSICS 5054/12/O/N/15

15 A piston of area 10cm2 is pushed slowly into a very large cylinder containing gas at a pressure of 10N/ cm2 . The pressure of the gas remains constant as the piston moves a distance of 0.10m. What is the force of the gas on the piston and what is the

O levels PHYSICS 5054/12/O/N/15

14 A person throws a stone so that it follows the path shown in the diagram. In which position does the stone have the most gravitational potential energy?

O levels PHYSICS 5054/12/O/N/15

13 The base of a rectangular storage tank is 2.0m by 3.0m. The tank is filled with paraffin to a depth of 3.0m.

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12 A gas is trapped inside a cylinder by a movable piston. The length of the gas column is 20cm and the pressure inside the cylinder is p.

O levels PHYSICS 5054/12/O/N/15

11 The total weight of the load and the wheelbarrow shown is 600N.

O levels PHYSICS 5054/12/O/N/15

10 Two cylinders P and Q are made of copper. P Q The height of P is twice the height of Q. The diameter of P is half the diameter of Q. Which statement is correct?

O levels PHYSICS 5054/12/O/N/15

9 A student produces some revision notes on gravity, mass and weight. Which statement is not correct?

O levels PHYSICS 5054/12/O/N/15

8 The diagram represents the Moon in its orbit around the Earth. Which arrow represents the direction of the resultant force acting on the Moon at the instant shown?

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7 Four of the gravitational forces that act between bodies in the Solar System are described below. P the force on the Moon due to the Earth Q the force on the Earth due to the Sun R the force on the Earth due to the Moon S the force on the Moon due to th

O levels PHYSICS 5054/12/O/N/15

6 At time t 1, a stone is dropped from a stationary balloon. The stone reaches terminal velocity at time t 2. Which row gives the acceleration of the stone at time t 1 and at time t 2?

O levels PHYSICS 5054/12/O/N/15

5 An apple of mass 0.15kg and weight 1.5N falls from a tree. At one point during its fall, the air resistance on the apple is 0.60N upwards. What is the accelerat

O levels PHYSICS 5054/12/O/N/15

4 A lorry takes 15 minutes to travel along the path PQRS. 4 A lorry takes 15 minutes to travel along the path PQRS.

O levels PHYSICS 5054/12/O/N/15

3 The diagram shows a micrometer scale. Which reading is shown? A 5.64mm B 7.14mm C 7.16mm D 7.64mm

O levels PHYSICS 5054/12/O/N/15

During an experiment to find the density of a stone, the stone is lowered into a measuring cylinder partly filled with water. water stone Which statement is correct? A The difference between the readings gives the density of the stone. B The difference b

O levels PHYSICS 5054/12/O/N/15

1 Which is a scalar quantity? A mass B force C velocity D weight

O levels PHYSICS 5054/12/O/N/15

4 You are asked to take a set of readings to plot a cooling curve that shows how quickly hot water in a test-tube cools. (a) You are given a test-tube about half-full of hot water. List the additional apparatus you need.

O levels PHYSICS 5054/42/M/J/15

3 A student uses a cathode-ray oscilloscope (c.r.o.) to measure a voltage. (a) In the space below, draw a circuit diagram containing a battery, a switch, a fixed resistor and a variable resistor, all connected in series. [1] (b) The c.r.o. is used to me

O levels PHYSICS 5054/42/M/J/15

2 A student investigates how the area of a parachute affects the time taken for it to fall. The student cuts a square from an A4 sheet of paper to make the parachute. He attaches the parachute to an eraser using four pieces of thin string of equal length,

O levels PHYSICS 5054/42/M/J/15

1 Two students decide to mark out a 100 m length to use as a running track on a school field. (a) One student decides to measure the average length of one of his strides and then pace out 100 m. The student is shown walking in Fig. 1.1.

O levels PHYSICS 5054/42/M/J/15

11 A bungee jumper falls from a bridge above a river, as shown in Fig. 11.1. position A at the top position B position C cord starts to stretch position D at the lowest point Fig. 11.1 (not to scale) The man starts from position A in Fig. 11.1. The elasti

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10 Fig. 10.1 shows a relay connected to a cell and a switch(a) When switch S is closed, the iron core is magnetised. The left side of the core is an N-pole, as shown in Fig. 10.1. The iron armature is attracted to the core. (i) On Fig. 10.1, mark 1. the

O levels PHYSICS 5054/22/M/J/15

9 Fig. 9.1 shows the wavefronts of a water wave in deep water in a ripple tank.The frequency of the wave in deep water is 5.0Hz. (a) Explain what is meant by the frequency of a wave.

O levels PHYSICS 5054/22/M/J/15

8 Two isotopes of hydrogen are written as 1 1H and 2 1H. (a) Complete Fig. 8.1 to show the number of protons and neutrons in one nucleus of each of these isotopes of hydrogen.

O levels PHYSICS 5054/22/M/J/15

7 An electric hairdryer and an electric heater are connected to the mains supply, as shown in Fig. 7.1. Fig. 7.1 The cable from the heater to the mains supply has a live, a neutral and an earth wire. (a) State the purpose of the neutral wire.

O levels PHYSICS 5054/22/M/J/15

6 Fig. 6.1 shows a simple a.c. generator. (a) The coil rotates and an alternating electromotive force (e.m.f.) is induced in the coil. Fig. 6.2 shows how the alternating e.m.f. varies with time as the coil rotates.

O levels PHYSICS 5054/22/M/J/15

5 When a balloon is rubbed on hair, the balloon becomes negatively charged. The balloon is shown in Fig. 5.1. Fig. 5.1 (a) Explain how rubbing causes the balloon to become negatively charged.

O levels PHYSICS 5054/22/M/J/15

4 A metal can and a plastic bottle, both containing liquid, are cooled by placing them in a jug of melting ice, as shown in Fig. 4.1. melting ice jug Fig. 4.1 The can and bottle each contain 330 g of the same liquid at 15 °C. (a) The specific heat capaci

O levels PHYSICS 5054/22/M/J/15

3 Two different kettles are used to heat water, as shown in Fig. 3.1. energy supplied to the kettle in one minute/ J thermal energy (heat) supplied by the kettle to the water in one minute/J electric kettle 120000 95000 gas heated kettle 130000 90000 Fig.

O levels PHYSICS 5054/22/M/J/15

2 Fig. 2.1 shows two engineers measuring the length of a wall made from concrete.The wall is 2.0m high, 15m long and 0.25m thick. The weight of the wall is 180000N and the mass of the wall is 18000kg. (a) The engi

O levels PHYSICS 5054/22/M/J/15

1 The apparatus shown in Fig. 1.1 is used to measure the extension of a spring. (a) Explain how the mass causes a force on the spring. (b) The force on the spring is a vector quantity. State what is meant by a vector quantity

O levels PHYSICS 5054/22/M/J/15

40 The half-life of a radioactive isotope is 24 hours. A sample of this isotope produces an initial count rate of 720 counts per second. How long does it take for the count rate to fall to 90 counts per second?

O levels PHYSICS 5054/12/M/J/15

39 A radioactive material decays by this process: What is particle x? A an electron B a helium nucleus C a neutron D a proton

O levels PHYSICS 5054/12/M/J/15

38 A nucleus of Po 215 84 decays by emitting an alpha-particle and the resulting nucleus then decays by emitting a beta-particle. What is the nucleon number and proton number of the final nucleus?

O levels PHYSICS 5054/12/M/J/15

37 A transformer consists of two coils which are wound on to a metallic core. Which type of voltage is supplied to the transformer and which metal is used to make the core?

O levels PHYSICS 5054/12/M/J/15

36 A teacher moves a magnet into and out of a coil of wire, as shown, in order to demonstrate electromagnetic induction.

O levels PHYSICS 5054/12/M/J/15

35 The circuit shows three resistors in series connected to a battery. Each resistor has a voltmeter across it and two of the voltages are shown.

O levels PHYSICS 5054/12/M/J/15

34 Two resistors of resistances 30Ω and 60Ω are arranged in parallel. The current in the 30 Ω resistor is 0.60A.

O levels PHYSICS 5054/12/M/J/15

33 The diagram shows a circuit. Where must an ammeter be connected to measure the smallest current?

O levels PHYSICS 5054/12/M/J/15

32 A positively charged rod is brought near to an isolated uncharged conducting sphere. What are the charges on sides X and Y of the sphere? A Both X and Y are positively charged. B Both X and Y are negatively charged. C X is positively charged and Y is n

O levels PHYSICS 5054/12/M/J/15

31 A metal ring screens a piece of equipment from a magnetic field. Which metal should be used for the ring, and why? metal reason A copper the metal carries the field lines around the equipment

O levels PHYSICS 5054/12/M/J/15

30 Two sound waves X and Y are compared. X has the greater frequency. Y has the greater amplitude. How do the loudness and pitch of sound wave Y compare to those of X?

O levels PHYSICS 5054/12/M/J/15

29 In which situation do sound waves not travel? A from a satellite in space to Earth B from a ship to a submarine C from an explosion underground to the surface D through a balloon filled with helium gas

O levels PHYSICS 5054/12/M/J/15

28 Which component of the electromagnetic spectrum is used for television transmission from satellites? A microwaves B radio waves C ultra-violet D X-rays

O levels PHYSICS 5054/12/M/J/15

27 An image is formed by a thin converging lens when it is used as a magnifying glass. What is the correct description of the image? A real and erect B real and inverted C virtual and erect D virtual and inverted

O levels PHYSICS 5054/12/M/J/15

26 A ray of light is incident on the surface of a glass block, as shown in the diagram below. air 45° glass x The refractive index of the glass is 1.5. The light ray changes direction when entering the glass. What is the angle x through which the ray move

O levels PHYSICS 5054/12/M/J/15

25 A ray of light in glass is incident on the surface at an angle c. The angle c is the critical angle. Which diagram shows what happens to the light?

O levels PHYSICS 5054/12/M/J/15

24 A ball floating in a ripple tank begins to move vertically up and down as a wave passes beneath it. The ball does not move horizontally.

O levels PHYSICS 5054/12/M/J/15

23 The heat capacity of an object, of mass 2.0kg, is C. The energy needed to A increase the temperature of the whole object by ∆t is C∆t. B increase the temperature of unit mass of the object by ∆t is C∆t. C melt the whole object is C. D melt unit mass of

O levels PHYSICS 5054/12/M/J/15

22 A pupil adds 37g of ice at 0°C to 100g of water at 30°C. The final temperature of the water and melted ice is 0°C. No heat is lost to, or gained from, the surroundings. The specific heat capacity of water is 4.2J /(g°C). What is the specific latent hea

O levels PHYSICS 5054/12/M/J/15

21 In a liquid, some energetic molecules break free from the surface even when the liquid is too cold for bubbles to form. What is the name of this process?

O levels PHYSICS 5054/12/M/J/15

20 Some gas is trapped in a closed container. The gas is cooled and the volume of the container is kept constant. What happens to the gas molecules?

O levels PHYSICS 5054/12/M/J/15

19 Which diagram represents the change in the arrangement of the molecules in a solid as the substance melts?

O levels PHYSICS 5054/12/M/J/15

18 Which substance in the table is liquid at 20°C? melting point /°C boiling point /°C A –218 –183 B –39 357 C 44 280 D 119 444

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17 In a liquid-in-glass thermometer, the liquid column is 2.0cm long at 0°C and it expands 10.0cm when heated to 100°C.

O levels PHYSICS 5054/12/M/J/15

16 The tubes inside solar heating panels use the Sun’s radiation to warm water. Why are the tubes painted black? A Black surfaces absorb radiation well. B Black surfaces conduct heat well. C Black surfaces emit radiation well. D Black surfaces reflect rad

O levels PHYSICS 5054/12/M/J/15

15 An electrical heater is placed in a beaker of cold oil, as shown. The heater is switched on. What happens to the liquid at X? A It becomes less dense and falls. B It becomes less dense and rise

O levels PHYSICS 5054/12/M/J/15

14 A solid bar is heated at one end. How is thermal energy transferred to the other end of the bar?

O levels PHYSICS 5054/12/M/J/15

13 A builder lifts eight slabs from the ground on to the back of a lorry 1.5m high. The total time taken is 48s and each slab weighs 200N. How much useful power does the builder produce?

O levels PHYSICS 5054/12/M/J/15

12 A rocket of total mass M is travelling at a speed v. The engine of the rocket is fired and fuel is used up. The mass of the rocket decreases to M/ 2 and its speed increases to 2v. What happens to the kinetic energy of the rocket?

O levels PHYSICS 5054/12/M/J/15

11 The graph shows how the pressure of a fixed mass of gas varies with volume at constant temperature.

O levels PHYSICS 5054/12/M/J/15

10 The diagrams show liquids in containers. Which column of liquid exerts the greatest pressure on the base of its container?

O levels PHYSICS 5054/12/M/J/15

9 A uniform beam is pivoted at its centre. Two weights are placed on the beam in the positions shown and the beam is balanced by an upward force F.

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8 The mass of a stone is found on Earth using a pan balance. The weight of the stone is found using a newton meter.

O levels PHYSICS 5054/12/M/J/15

7 The Earth travels in a circular orbit around the Sun at constant speed. Which arrows show the direction of the acceleration of the Earth and the direction of the velocity of the Earth?

O levels PHYSICS 5054/12/M/J/15

6 A student drops, from rest, a table-tennis ball in air. What happens to the velocity and to the acceleration of the ball during the first few seconds after release?

O levels PHYSICS 5054/12/M/J/15

5 A metal ball of mass 0.30kg and weight 3.0N is held so that it is below the surface of oil. It experiences an upwards force of 0.30N.

O levels PHYSICS 5054/12/M/J/15

4 A car begins to move. It speeds up until it reaches a constant speed. It continues to travel at this constant speed for the rest of the journey. What happens to the acceleration and what happens to the velocity of the car during the journey?

O levels PHYSICS 5054/12/M/J/15

3 A cyclist takes a ride lasting 25s. The diagram shows how her distance travelled from the starting position varies with time.

O levels PHYSICS 5054/12/M/J/15

2 The diameter and the length of a thin wire, approximately 50cm in length, are measured as precisely as possible. What are the best instruments to use?

O levels PHYSICS 5054/12/M/J/15

1 Which quantity is a scalar? A acceleration B force C temperature D velocity

O levels PHYSICS 5054/12/M/J/15

4 A student investigates how the resistance of a wire depends upon its length. He uses the equation resistance R = potential difference V current I . The following apparatus is available: • power supply • ammeter • voltmeter • switch • connecting leads an

O levels PHYSICS 5054/42/O/N/17

3 A student measures the refractive index of the material of a transparent block ABCD by tracing the path of a ray of light through it. The experiment is set up as shown in Fig. 3.1.

O levels PHYSICS 5054/42/O/N/17

2 A student investigates the effect of insulation on the rate of cooling of hot water in a beaker. He pours 250cm3 of hot water into a beaker and places a thermometer in the water, as shown in Fig. 2.1.

O levels PHYSICS 5054/42/O/N/17

1 A student investigates the period of a simple pendulum. The period T is the time taken for one complete oscillation of the pendulum. She sets up the pendulum with its point of support a fixed height above the surface of the bench. She does not change th

O levels PHYSICS 5054/42/O/N/17

11 The metals in the list below have many different uses. aluminium copper iron silver steel (a) State which metal from the list is used for (i) a compass needle,

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10 A boiler containing water is plugged into a 230V mains supply. The heater in the boiler is operating at full power. (a) The power used by the heater is 2.8kW. (i) Calculate the current in the heater

O levels PHYSICS 5054/22/O/N/17

9 Fig. 9.1 shows an astronaut in space near to a space station in orbit above the Earth. rope Fig. 9.1 The total mass of the astronaut and all his equipment is 160 kg. The astronaut is initially at rest relative to the space station but he is then pulled

O levels PHYSICS 5054/22/O/N/17

8 In the engine compartment of a car, the battery supplies a current of 120A to the starter motor. (a) The starter motor is switched on for 3.5s. Calculate the charge that passes through the starter motor in this time.

O levels PHYSICS 5054/22/O/N/17

7 A 4.5V battery is connected in a circuit with an ammeter, a light-dependent resistor (LDR) and a 1800Ω fixed resistor. Fig. 7.1 is the circuit diagram.

O levels PHYSICS 5054/22/O/N/17

6 Fig. 6.1 shows a girl standing a few hundred metres in front of a large building. Fig. 6.1 (not to scale) The girl uses a signal generator and a loudspeaker to send a short pulse of sound towards the building. The sound has a frequency of 3700Hz. A shor

O levels PHYSICS 5054/22/O/N/17

5 A process called nuclear fusion takes place in the Sun. (a) Discuss the process of nuclear fusion taking place in the Sun.

O levels PHYSICS 5054/22/O/N/17

4 A 75W filament lamp in an office is accidentally left switched on for 63 hours when the office is closed. (a) (i) Calculate the electrical energy that is supplied to this lamp in this time.

O levels PHYSICS 5054/22/O/N/17

3 A solid, rectangular concrete block is lying horizontally on flat ground with one of its largest sides in contact with the ground. Fig. 3.1 shows the dimensions of the block

O levels PHYSICS 5054/22/O/N/17

2 A force applied to a solid object may cause it to accelerate so that its velocity changes. (a) State two other properties of the object which may change when a force is applied

O levels PHYSICS 5054/22/O/N/17

1 Two small tugboats are pulling a large ship in a harbour. Fig. 1.1 represents the view from above and shows the directions of the forces on the ship.

O levels PHYSICS 5054/22/O/N/17

40 A nucleus of phosphorus P32 15 emits a beta-particle to form a new nucleus. What is the nucleon number and what is the proton number of the new nucleus?

O levels PHYSICS 5054/12/O/N/17

39 A narrow beam of alpha-particles is fired at a thin piece of gold foil. What is the final direction of the largest number of alpha-particles?

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38 A beam, consisting of alpha-particles (α), beta-particles (β), and gamma rays (γ), passes into a magnetic field. Which diagram shows their paths in the magnetic field?

O levels PHYSICS 5054/12/O/N/17

37 A sample contains atoms of an isotope that has a half-life of 7.2 years. Which quantity halves every 7.2 years?

O levels PHYSICS 5054/12/O/N/17

36 A circuit includes a thermistor and a light-dependent resistor (LDR). The resistance of the thermistor and the resistance of the LDR both increase. Which changes cause this?

O levels PHYSICS 5054/12/O/N/17

35 Which particles are emitted by a hot metal filament? A alpha-particles B electrons C neutrons D protons

O levels PHYSICS 5054/12/O/N/17

34 A straight wire carries a current into the paper. The diagram shows three magnetic field lines around the wire. current into paper key The current in the wire increases. What is the direction of the field lines and which change occurs to the field line

O levels PHYSICS 5054/12/O/N/17

33 Why is the coil of an electric motor wound on a soft-iron cylinder? A to decrease the electric current B to increase the electric current C to reverse the magnetic field D to strengthen the magnetic field

O levels PHYSICS 5054/12/O/N/17

32 The diagram shows the circuit for a hair-dryer. The fan motor has a power rating of 0.10 kW and the heaters each have a rating of 0.40 kW. The cost of electricity is 8.0 cents / kWh. What is the cost of running the hair-dryer for two hours with switche

O levels PHYSICS 5054/12/O/N/17

31 The battery in a circuit contains two identical cells connected in parallel.

O levels PHYSICS 5054/12/O/N/17

30 A piece of wire has a resistance of 16Ω. The wire is 20 cm long and has a cross-sectional area of 2.0 mm2 . Which wire of the same material has a resistance of 8.0Ω?

O levels PHYSICS 5054/12/O/N/17

29 A 6.0V battery, three resistors and three voltmeters are connected in the circuit shown.

O levels PHYSICS 5054/12/O/N/17

28 A negatively-charged rod is brought near to an uncharged metal sphere on an insulating stand. Which diagram shows the charge distribution on the sphere?

O levels PHYSICS 5054/12/O/N/17

27 A plastic block is rubbed with a silk handkerchief and the block becomes charged. What causes the block to become charged?

O levels PHYSICS 5054/12/O/N/17

26 A compass needle is moved to different places around a strong bar magnet. Which position shows incorrectly the direction of the compass needle?

O levels PHYSICS 5054/12/O/N/17

25 Which row gives the speed of sound in air, in water and in steel? speed in air m / s speed in water m / s speed in steel m / s A 330 1500 6000 B 330 6000 1500 C 6000 330 1500 D 6000 1500 330

O levels PHYSICS 5054/12/O/N/17

24 The diagram shows the electromagnetic spectrum with three components named. The spectrum is in order from long wavelength to short wavelength. Which component of the spectrum is used in a sunbed to produce a suntan?

O levels PHYSICS 5054/12/O/N/17

23 The ray diagrams, X and Y, show two ways in which a thin converging lens produces an image that is larger than the object.

O levels PHYSICS 5054/12/O/N/17

22 A solid plastic cylinder is immersed in a liquid of refractive index 1.4. Light travelling in the plastic cylinder strikes the inside surface at an angle of incidence of 70°. The light undergoes total internal reflection.

O levels PHYSICS 5054/12/O/N/17

21 Light is incident on a plastic block of refractive index 1.5. The angle of incidence is 50°. What is the angle of refraction?

O levels PHYSICS 5054/12/O/N/17

20 Which diagram shows reflection by a plane mirror?

O levels PHYSICS 5054/12/O/N/17

19 A sound wave in a solid is represented by a series of lines. The diagram shows compressions C and rarefactions R at one instant in time.

O levels PHYSICS 5054/12/O/N/17

18 A heater is designed to radiate thermal energy. Which change to the design decreases the thermal energy emitted by radiation? A a darker coloured surface B a higher surface temperature C a larger surface area D a shinier surface

O levels PHYSICS 5054/12/O/N/17

17 A thermocouple is a type of thermometer. Which statement applies to a thermocouple? A It can measure rapidly varying temperatures. B It must be made from three different metals. C Its resistance decreases when one junction is heated. D The distance bet

O levels PHYSICS 5054/12/O/N/17

16 The distance between the ice point and the steam point in a liquid-in-glass thermometer is 20 cm. The top of the liquid thread is 12 cm above the ice point. What is the temperature?

O levels PHYSICS 5054/12/O/N/17

15 What is meant by the heat capacity of a solid object? A the maximum thermal energy it can store per unit mass B the maximum thermal energy it can store per unit volume C the thermal energy required to cause a unit temperature rise D the thermal energy

O levels PHYSICS 5054/12/O/N/17

14 Solid wax is melted in a boiling tube and then allowed to cool. The graph shows the cooling curve.

O levels PHYSICS 5054/12/O/N/17

13 A dish of liquid is left on a laboratory bench. Some of the liquid evaporates. What happens and why?

O levels PHYSICS 5054/12/O/N/17

12 An extremely large increase in pressure is needed to compress a liquid. A gas can be compressed by a much smaller increase in pressure. Which statement explains this?

O levels PHYSICS 5054/12/O/N/17

11 A gas syringe contains a fixed mass of air. The volume of the air is 240 cm3 and it exerts a pressure of 5.0 × 104Pa. The air is slowly compressed, keeping the temperature constant, until the pressure is 1.5 × 105Pa. What is the final volume of air?

O levels PHYSICS 5054/12/O/N/17

10 The diagram shows a mercury manometer connected to a gas container. The density of mercury is 14 000kg/m3 . The gravitational field strength g is 10 N/ kg. What is the pressure difference between the gas in the container and the atmosphere?

O levels PHYSICS 5054/12/O/N/17

9 In a hydroelectric power station, 4.2 × 105 kg of water passes through the turbines every second. The turbines are at a height of 50m below the surface of the reservoir. The gravitational field strength g is 10N/ kg. Assuming there are no energy losses,

O levels PHYSICS 5054/12/O/N/17

8 A tennis ball of mass 56 g is travelling at 1500 metres /minute. Which expression is equal to the kinetic energy, in joules, of the tennis ball?

O levels PHYSICS 5054/12/O/N/17

7 A diver of weight 500N stands at the end of a springboard that is 2.0 m long and is fixed at point P. The springboard has a weight of 500 N. The centre of mass of the springboard is in the centre of the board. What is the total moment about point P of t

O levels PHYSICS 5054/12/O/N/17

6 Two blocks are joined together.One block has a density of 6.0 g/ cm3 and the other has a density of 9.0 g/ cm3 . What is the overall density of the two blocks joined together?

O levels PHYSICS 5054/12/O/N/17

5 The diagram shows two objects on a beam balance. pivot The beam balance is in equilibrium. Which quantities may be different?

O levels PHYSICS 5054/12/O/N/17

4 A free-fall skydiver jumps from a plane. As he falls there is a force acting upwards and a force acting downwards on his body. These produce a resultant force. Before he reaches terminal velocity, how do the sizes of the forces change?

O levels PHYSICS 5054/12/O/N/17

3 The speed-time graph represents a short journey. Which distance-time graph represents the same journey?

O levels PHYSICS 5054/12/O/N/17

2 A manufacturer measures the three dimensions of a wooden floor tile using three different instruments. The approximate dimensions of the tile are shown.

O levels PHYSICS 5054/12/O/N/17

1 Which list contains only scalar quantities? A acceleration, displacement, velocity B distance, force, speed C force, length, time D length, mass, speed

O levels PHYSICS 5054/12/O/N/17

4 An object is moved between a lamp and a screen. A student investigates how the height of the shadow cast by the object on the screen changes. The apparatus is shown in Fig. 4.1.

O levels PHYSICS 5054/42/M/J/17

3 A student investigates the effect of three different insulating materials on the cooling of hot water in a beaker. The following apparatus is available: • thermometer • stopwatch • 250cm3 glass beaker • 250cm3 measuring cylinder • cardboard • cotton woo

O levels PHYSICS 5054/42/M/J/17

2 A student investigates a series circuit containing two non-identical lamps P and Q. Both lamps need a working voltage of 2.5 V to be at full brightness. She sets up the circuit shown in Fig. 2.1.

O levels PHYSICS 5054/42/M/J/17

1 A student measures the acceleration of free-fall g. He drops a metal ball from a height of 1.000m onto the floor, and measures the time t it takes to hit the floor. Fig. 1.1 shows the ball and a metre rule, held vertically in a clamp.

O levels PHYSICS 5054/42/M/J/17

11 One source of background radiation is cosmic rays. The cosmic rays that enter the Earth’s atmosphere are known as primary cosmic rays. Most of these rays are fast-moving protons or fast-moving alpha-particles. Both the Earth’s magnetic field and th

O levels PHYSICS 5054/22/M/J/17

10 (a) Measurements are made of the current in a metal wire and the potential difference (p.d.) across it. Fig. 10.1 shows a graph of the current against the p.d. for the wire.

O levels PHYSICS 5054/22/M/J/17

9 Fig. 9.1 shows a man in a room looking into a mirror, as viewed from above.The man can see an image of part of the wall AB in the mirror. Point C is the point on the wall closest to A that the man can see by reflection in the mirror. This point is not

O levels PHYSICS 5054/22/M/J/17

8 Fig. 8.1 shows charges on a rod and on a cloth.State how Fig. 8.1 shows that the rod and the cloth are uncharged.

O levels PHYSICS 5054/22/M/J/17

7 Fig. 7.1 shows part of a d.c. electric motor.(a) A coil of wire ABCD is placed between the poles of a magnet. Ends X and Y are connected to a commutator and a battery. (i) State why there is a force on side AB of the coil.

O levels PHYSICS 5054/22/M/J/17

6 (a) Explain the difference between a longitudinal wave and a transverse wave. You may draw a diagram, if you wish, to help your explanation

O levels PHYSICS 5054/22/M/J/17

5 When a sample of a solid is heated, it becomes a liquid and eventually becomes a gas. (a) Fig. 5.1 shows the arrangement of the molecules in the solid.

O levels PHYSICS 5054/22/M/J/17

4 Fig. 4.1 shows apparatus used to measure the specific heat capacity of a metal. The electric heater is switched on and supplies 17000J of thermal energy (heat) to the block of metal. The temperature of the metal rises from 16°C to 38°C. The mass of the

O levels PHYSICS 5054/22/M/J/17

3 Fig. 3.1 shows the brake pedal of a car which is connected to a brake cylinder. brake pedal pivot brake cylinder piston fluid 80N 18 cm 4.0 cm F Fig. 3.1 (not to scale) The brake is pressed with a force F. This force produces a moment about the pivot. P

O levels PHYSICS 5054/22/M/J/17

2 A swing is made by tying rope loosely to the branch of a tree, as shown in Fig. 2.1. A child swings backwards and forwards several times, starting at the highest point A.

O levels PHYSICS 5054/22/M/J/17

A car accelerates from rest in a straight line. During the first 14s, the acceleration is uniform and the car reaches a speed of 25m/ s. (a) (i) Calculate the acceleration of the car. acceleration =

O levels PHYSICS 5054/22/M/J/17

40 What happens to the proton number (atomic number) of a nucleus as it emits an alpha-particle? A It decreases by one. B It decreases by two. C It decreases by four. D It does not change.

O levels PHYSICS 5054/12/M/J/17

39 Which row is correct for nuclear fission and for nuclear fusion? fission fusion A produces larger nuclei is the energy source of a star B produces larger nuclei releases energy in a power station C produces smaller nuclei is the energy source of a sta

O levels PHYSICS 5054/12/M/J/17

38 Which material is used for the core of a transformer? A copper B iron C plastic D steel

O levels PHYSICS 5054/12/M/J/17

37 The N-pole of a magnet is moved into a solenoid and an e.m.f. is induced.What causes an increase in the induced e.m.f.? A moving the magnet more quickly B moving the magnet more slowly C pulling the magnet out instead of pushing it in D using the S-pol

O levels PHYSICS 5054/12/M/J/17

36 What is the effect of using a split-ring commutator? A it ensures that the current is the same in all parts of a series circuit B it generates an alternating electric current C it produces a force on a current-carrying coil D it reverses the direction

O levels PHYSICS 5054/12/M/J/17

35 A thermistor and a light-dependent resistor (LDR) are connected in series. A potential difference (p.d.) of 6.0V is applied across them as shown. The thermistor has a resistance of 6000Ω in a cold room and 1000Ω in a warm room. The LDR has a resistance

O levels PHYSICS 5054/12/M/J/17

34 The readings of an ammeter and a voltmeter are used to calculate the resistance of resistor R. Which circuit shows the ammeter and voltmeter in the correct positions?

O levels PHYSICS 5054/12/M/J/17

33 The circuit shown is switched on for 1.0 minute. How much charge passes through the 3.0Ω resistor?

O levels PHYSICS 5054/12/M/J/17

32 Electrical apparatus is protected from magnetic fields by placing the apparatus in a box. What is the box made from? A aluminium B iron C rubber D steel

O levels PHYSICS 5054/12/M/J/17

31 Which action demagnetises a bar magnet? A placing the magnet inside a coil connected to a d.c. supply B placing the magnet inside a coil connected to an a.c. supply C withdrawing the magnet from inside a coil connected to a d.c. supply D withdrawing th

O levels PHYSICS 5054/12/M/J/17

30 What proves that a metal bar is a permanent magnet? A It attracts both ends of a compass needle. B It attracts one end of another magnet. C It conducts electricity. D It repels one end of another magnet.

O levels PHYSICS 5054/12/M/J/17

29 Which type of wave is used to send television signals to a satellite? A infra-red waves B light waves C microwaves D sound waves

O levels PHYSICS 5054/12/M/J/17

28 A narrow beam of yellow and green light is separated as it passes through a prism. Which ray diagram is correct?

O levels PHYSICS 5054/12/M/J/17

27 The graph shows how the height of a water wave varies with distance along the wave.

O levels PHYSICS 5054/12/M/J/17

26 The diagram shows a water wave in a ripple tank being refracted at the boundary between region P and region Q

O levels PHYSICS 5054/12/M/J/17

25 A metal box has four different surfaces; dull black, shiny black, dull silver and shiny silver. The box is filled with boiling water so that each surface is at the same temperature. A sensor measures the amount of radiation from each surface.

O levels PHYSICS 5054/12/M/J/17

24 The bulbs of the four thermometers shown all contain mercury. Which thermometer is the most sensitive?

O levels PHYSICS 5054/12/M/J/17

23 A tray for making ice cubes holds 30 g of water. The specific latent heat of fusion of ice is 3.3 × 105 J / kg. How much thermal energy is removed from the water at 0°C to change it into ice at 0°C?

O levels PHYSICS 5054/12/M/J/17

22 Some ice cubes are taken from a freezer and heated in a container. The readings of temperature and time are recorded on the graph. Which temperature is 0°C?

O levels PHYSICS 5054/12/M/J/17

21 A substance consists of particles that are close together and moving past each other at random. The average speed of the particles is gradually increasing.

O levels PHYSICS 5054/12/M/J/17

20 A fixed mass of gas is enclosed in a cylinder with a movable piston. cylinder gas piston The gas is initially at pressure p1 and has a volume V1. The temperature is kept constant. The piston is moved so that the pressure becomes p2 and the volume becom

O levels PHYSICS 5054/12/M/J/17

19 The pressure of a gas in a cylinder is measured using a water manometer. to gas cylinder 20 cm water The density of water is 1000kg/m3 and the gravitational field strength g is 10N/ kg. What is the pressure, above atmospheric pressure, of the gas in t

O levels PHYSICS 5054/12/M/J/17

18 Two glass containers filled with different liquids are placed next to each other. Point P is a distance h below the surface of the liquid in one container. Point Q is a distance h below the surface of the liquid in the other container.

O levels PHYSICS 5054/12/M/J/17

17 In a coal-fired power station, the coal is burnt and thermal energy (heat) is produced. The thermal energy is used to produce electrical energy. In which order does the energy pass through parts of the power station?

O levels PHYSICS 5054/12/M/J/17

16 Which energy source is non-renewable? A nuclear energy B solar energy C tidal energy D wind energy

O levels PHYSICS 5054/12/M/J/17

15 A student of mass 60 kg climbs some steps. He travels a horizontal distance of 2.0m and a vertical distance of 1.5m. The gravitational field strength g is 10N/ kg.

O levels PHYSICS 5054/12/M/J/17

14 A small motor has an input power rating of 10W and is run for 5.0 minutes. What is the electrical energy input to the motor in this time?

O levels PHYSICS 5054/12/M/J/17

13 The diagram shows a load-extension graph for a wire. Which point is the limit of proportionality?

O levels PHYSICS 5054/12/M/J/17

12 The graph shows the extension of a piece of copper wire as the load on it is increased. 0 What does the graph show?

O levels PHYSICS 5054/12/M/J/17

11 The diagram shows a rectangular block. The density of the block is 2.5g/ cm3 . What is the mass of the block?

O levels PHYSICS 5054/12/M/J/17

10 On the Earth’s surface, the gravitational field strength is 10N/ kg. On the surface of Mars, the gravitational field strength is 3.8N/ kg. A robot vehicle has a weight of 2000N on Earth. What is the weight of the robot vehicle on Mars?

O levels PHYSICS 5054/12/M/J/17

9 The diagram shows a block of wood resting on a sloping board. Which arrow shows the direction of the gravitational force acting on the block?

O levels PHYSICS 5054/12/M/J/17

8 A car travels at a constant speed along a circular, horizontal path. path of car towards the centre away from the centre the direction of travel car Which statement describes the forces acting on the car? A They are balanced as the car is moving at cons

O levels PHYSICS 5054/12/M/J/17

7 A train of mass 240000kg is travelling at a speed of 60m/ s. The brakes are applied and it decelerates for 10 minutes until it comes to rest. What is the average resultant force?

O levels PHYSICS 5054/12/M/J/17

6 A hanging basket is fixed to a wall by a bracket. wall 80N 20N bracket The weight of the basket is 80N. The weight of the bracket is 20N. What is the size of the upwards force exerted on the bracket by the wall?

O levels PHYSICS 5054/12/M/J/17

The diagram shows a speed-time graph for an object moving with uniform acceleration. 6.0 0 0 4.0 speed m / s time / s What is the distance travelled in the first 4.0s? A 0.67m B 1.5 m C 12m D 24 m

O levels PHYSICS 5054/12/M/J/17

4 The diagram shows the distance-time graph of a car. distance 0 time 0 The car is travelling along a straight road up a hill. Which quantity for the car is constant and greater than zero? A acceleration B gravitational potential energy C kinetic energy D

O levels PHYSICS 5054/12/M/J/17

3 A micrometer is used to measure the diameter of a uniform wire. wire screw rotating scale fixed scale What is done to obtain an accurate answer? A Make the micrometer horizontal and then use the scales to find the reading. B Subtract the fixed-scale rea

O levels PHYSICS 5054/12/M/J/17

2 The diagram shows the resultant R of a 3.0N force and a 4.0N force acting at a point. 3.0N R 4.0N The angle between the 3.0N force and the 4.0N force can be any value from 0° to 90°. Which value of R is not possible?

O levels PHYSICS 5054/12/M/J/17

1 A car accelerates at 5.0m/ s2 along a straight, horizontal road and reaches a velocity of 20m/ s in a time of 4.0s. During this time, its total displacement is 40m. Which quantity is a scalar? A a displacement of 40m B a time of 4.0s C a velocity of 20

O levels PHYSICS 5054/12/M/J/17

4 A student uses a plotting compass to plot the pattern of the magnetic field between the North poles of two bar magnets. The student places the magnets on a sheet of white paper, as shown in Fig. 4.1.

O levels PHYSICS 5054/42/O/N/18

3 A student and her friend measure an approximate value for the speed of sound in air using echoes. • She stands a large distance from a reflecting wall. • She claps her hands at a regular rate. • She adjusts her rate of clapping until each clap coincides

O levels PHYSICS 5054/42/O/N/18

2 A student measures the focal length of a convex lens. He sets up the apparatus shown in Fig. 2.1.• He places the lens a distance from the illuminated object. • He moves the screen until a sharp image of the object is formed on the screen. (a) (i) Measur

O levels PHYSICS 5054/42/O/N/18

1 A student investigates how the current in a thermistor depends upon temperature. She sets up the circuit shown in Fig. 1.1. • She pours hot water into the beaker. • She stirs the water, measures its temperature and reads the ammeter. • She records the v

O levels PHYSICS 5054/42/O/N/18

10 A student sets up the circuit shown in Fig. 10.1 in a laboratory at room temperature. The electromotive force (e.m.f.) of the battery is 12V. The switch is closed. (a) The connecting wires in the circuit a

O levels PHYSICS 5054/22/O/N/18

9 Both sound and ultrasound are waves that travel in solids, liquids and gases. (a) State how sound differs from ultrasound. (b) Sound and ultrasound are longitudinal waves that consist of compressions and rarefactions. (i) Explain what is meant by a wav

O levels PHYSICS 5054/22/O/N/18

8 During a game of cricket, a player hits a ball with a bat. The ball then travels vertically upwards, as shown in Fig. 8.1. ball bat Fig. 8.1 The speed of the ball as it leaves the bat is 8.7m/s. (a) The mass of the ball is 0.16kg. (i) 1. State what is

O levels PHYSICS 5054/22/O/N/18

7 Fig. 7.1 shows the structure of a transformer. A lamp is connected to the secondary coil. (a) Explain why the core of the transformer is made from iron.

O levels PHYSICS 5054/22/O/N/18

6 Fig. 6.1 shows a radiation detector placed on a laboratory bench. 000031 counts /minute radiation detector point P Fig. 6.1 The detector is switched on and six readings of the count rate are recorded. The table in Fig. 6.2 shows the readings obtained.

O levels PHYSICS 5054/22/O/N/18

5 Two uncharged conducting spheres, K and L, are mounted on insulating stands. (a) State how the structure of an insulator differs from that of a conductor and give one example of an insulator.

O levels PHYSICS 5054/22/O/N/18

4 A house has several solar panels on the roof. These panels use energy from the Sun both to generate electricity and to raise the temperature of water that passes through tubes inside the panels. (a) The panels on the roof of the house have a black surfa

O levels PHYSICS 5054/22/O/N/18

3 Fig. 3.1 shows a cylindrical copper kettle that contains cold water. The kettle is used to heat water and there is an electric heater at the base. (a) State and explain the advantage of heating the water from below.

O levels PHYSICS 5054/22/O/N/18

2 A sports car is designed to be very stable when turning a corner at high speed. Fig. 2.1 shows the position of the centre of mass of the car

O levels PHYSICS 5054/22/O/N/18

1 Fig. 1.1 shows a satellite travelling at a constant speed in a circular orbit around the Earth. (a) State how speed differs from velocity

O levels PHYSICS 5054/22/O/N/18

40 Which statement about two different isotopes of the same element is correct? A Both isotopes have the same number of electrons in a nucleus. B Both isotopes have the same number of protons in a nucleus. C Both isotopes have the same number of neutrons

O levels PHYSICS 5054/12/O/N/18

39 The results of the alpha-particle scattering experiment gave evidence for which of the following? A nuclear fusion B radioactive decay C the existence of isotopes D the nuclear atom

O levels PHYSICS 5054/12/O/N/18

38 Which statement about the reactor in a nuclear power station is correct? A In the reactor, the main reaction occurs when protons hit uranium nuclei. B The process taking place in the reactor is called nuclear fusion. C The reactor produces energy to bo

O levels PHYSICS 5054/12/O/N/18

37 What does the alpha-radiation given off by radioactive nuclei consist of? A fast-moving protons B helium nuclei C microwaves D radio waves

O levels PHYSICS 5054/12/O/N/18

36 An oscilloscope is connected to a d.c. power supply. The time-base on the oscilloscope is switched off. What is seen on the screen of the oscilloscope?

O levels PHYSICS 5054/12/O/N/18

35 A thermistor and a light-dependent resistor are connected in series. Which conditions give the least resistance?

O levels PHYSICS 5054/12/O/N/18

34 Which cable transmits electrical energy at the highest voltage? A a cable from a bicycle dynamo to a lamp B a household lighting cable C a power cable between towns D an electric cooker cable

O levels PHYSICS 5054/12/O/N/18

33 In a lighting circuit, the switch is placed in the live wire. Why is this? A A lamp in the circuit can be isolated from the supply. B The fuse is in the neutral wire. C The switch does not work in the neutral wire. D Too much current flows in the earth

O levels PHYSICS 5054/12/O/N/18

32 A defibrillator is a device that is used to give an electric shock to a patient’s heart. It supplies an electric shock with energy 240 J at an average voltage of 2000V for 10ms. What is the average current it supplies?

O levels PHYSICS 5054/12/O/N/18

31 A wire of length 0.50 m and cross-sectional area 1.0 × 10–6 m2 has a resistance of 0.75Ω. Another wire of the same material has a length of 2.0 m and a cross-sectional area of 0.50 × 10–6m2 . What is the resistance of the longer wire?

O levels PHYSICS 5054/12/O/N/18

30 The diagram shows three 6.0Ω resistors connected to give various total resistances. What is the difference between the smallest total resistance and the largest total resistance?

O levels PHYSICS 5054/12/O/N/18

29 Students are asked to describe an experiment to measure the resistance of a metallic conductor. Which description is correct? A Connect an ammeter in parallel and a voltmeter in series with the conductor then use R = V I . B Connect an ammeter in paral

O levels PHYSICS 5054/12/O/N/18

28 Which diagram shows the magnetic field pattern in the region between the N-poles of the two bar magnets?

O levels PHYSICS 5054/12/O/N/18

27 Ultrasound is used to map the ocean floor. During one survey, the depth of water is 1200 m. An ultrasound pulse is sent from the surface and when it returns to the ship, another pulse is sent immediately. In any period of 8.0 s, five pulses are sent do

O levels PHYSICS 5054/12/O/N/18

26 Which statement about radio waves is correct? A Radio waves are sound waves. B Radio waves are used to kill cancerous cells. C Radio waves are used in television communications. D Radio waves have frequencies higher than those of visible light.

O levels PHYSICS 5054/12/O/N/18

25 A student reads the following in her physics book. ‘The incident angle is greater than 42° which is the critical angle for glass in air.’ What is the student reading about? A focal length of a glass lens B reflection in a plane mirror C refraction as l

O levels PHYSICS 5054/12/O/N/18

24 White light is dispersed by a prism. Compared with blue light, the red light is A slowed down less and refracted less. B slowed down less and refracted more. C slowed down more and refracted less. D slowed down more and refracted more.

O levels PHYSICS 5054/12/O/N/18

23 The diagram shows a thin converging lens of focal length f. Where must an object be placed to produce a real image in the position shown?

O levels PHYSICS 5054/12/O/N/18

22 Which statement about a water wave is correct? A The amplitude is the vertical distance between a trough and a peak. B The frequency is the number of troughs passing a point in one second added to the number of peaks passing a point in one second. C Th

O levels PHYSICS 5054/12/O/N/18

21 Two liquid-in-glass thermometers are almost identical. They contain the same quantity of the same liquid and the diameters of their capillary tubes are the same. The only difference is that one thermometer is longer than the other. Which row shows how

O levels PHYSICS 5054/12/O/N/18

20 What increases when a liquid becomes a gas at its boiling point? A the average kinetic energy of the molecules B the molecular size C the molecular spacing D the total number of molecules

O levels PHYSICS 5054/12/O/N/18

19 A 100 g piece of solid lead at room temperature is heated. After 22 s, it has all become liquid. The graph shows how its temperature varies with time.

O levels PHYSICS 5054/12/O/N/18

18 Some gas is trapped in a closed container. The gas is cooled and the volume of the container is kept constant. What happens to the gas molecules? A They collide with the walls more often. B They contract. C They get closer together. D They move more sl

O levels PHYSICS 5054/12/O/N/18

17 A cold bottle containing a drink is placed on a table on a warm day. Drops of water form on the outside of the bottle. Which process causes the drops to form? A condensation B conduction C convection D evaporation

O levels PHYSICS 5054/12/O/N/18

16 A long tube, full of mercury, is inverted in a small dish of mercury. Q R S P The mercury level in the tube falls, leaving a vacuum at the top. When the atmospheric pressure decreases, which length decreases?

O levels PHYSICS 5054/12/O/N/18

15 Air is trapped in a cylinder by a piston. The pressure of the air is p and the length of the air column is 20 cm. The piston is moved outwards until the length of the air column has increased by 40 cm. The temperature of the air remains constant.

O levels PHYSICS 5054/12/O/N/18

14 A rectangular block of metal has weight 6.0N and measures 3.0 cm × 4.0 cm × 5.0 cm. What is the smallest pressure that it can exert when resting on a horizontal surface?

O levels PHYSICS 5054/12/O/N/18

13 Different liquids are poured into four different containers. In which container does the liquid produce the greatest pressure at the bottom of the container?

O levels PHYSICS 5054/12/O/N/18

12 A motor is used to lift a load 0.50 m vertically, as shown. The load weighs 40 N. The power of the motor is 20W and the system is 25% efficient. How long does it take to raise the load? A 0.040 s B 0.25 s C 4.0 s D 40 s

O levels PHYSICS 5054/12/O/N/18

11 The diagram represents a geothermal power station. Which useful energy transformation is taking place? A electrical energy → potential energy B electrical energy → thermal energy C potential energy → electrical energy D thermal energy → electrical ener

O levels PHYSICS 5054/12/O/N/18

10 Which diagram shows the addition of the 4.0N and the 3.0N forces?

O levels PHYSICS 5054/12/O/N/18

9 Paths are laid as shown between points X, Y and Z. X Y Z 5.0 m 12.0 m 13.0 m A person walks along the paths from X to Y to Z and then back to X. What is the value of the total displacement and of the total distance travelled?

O levels PHYSICS 5054/12/O/N/18

8 A tennis ball is compressed. Work is done and energy is transferred to the molecules of air inside the ball, and also to the rubber from which the ball is made. Which row is correct?

O levels PHYSICS 5054/12/O/N/18

7 Two cylinders P and Q are made of copper. P Q The height of P is twice the height of Q. The diameter of P is half the diameter of Q. Which statement is correct?

O levels PHYSICS 5054/12/O/N/18

6 The graph shows how the extension of a spring changes with the masses suspended from it when the spring is on planet X and when the spring is on planet Y.

O levels PHYSICS 5054/12/O/N/18

5 Which piece of apparatus may be used to compare the masses of two objects? A balance B manometer C measuring cylinder D micrometer

O levels PHYSICS 5054/12/O/N/18

4 On which car is there a resultant force? A a car moving along a straight horizontal road at constant speed B a car moving around a bend at constant speed C a car moving uphill at constant velocity D a car that is stationary

O levels PHYSICS 5054/12/O/N/18

3 An engine pulls a truck at constant speed on a level track. The link between the engine and the truck breaks. The driving force on the engine remains constant. What effect does this have on the engine and on the truck?

O levels PHYSICS 5054/12/O/N/18

2 The table shows how the speeds of four bodies, A, B, C and D, change with time. Which body has an acceleration that is not constant?

O levels PHYSICS 5054/12/O/N/18

1 An apple falls from a tree. Which row describes the forces acting on the apple and the motion of the apple as it falls? forces acting on the apple motion of the apple A balanced acceleration B balanced constant speed C unbalanced acceleration D unbalanc

O levels PHYSICS 5054/12/O/N/18

4 A student measures the density of copper using a balancing method. • She sets up the apparatus as shown in Fig. 4.1.

O levels PHYSICS 5054/42/M/J/18

3 A student measures the least pressure that a rectangular wooden block exerts on a table. • He places the wooden block on a sheet of paper, with its largest surface touching the paper. • He uses a pencil to draw the outline of the wooden block on the pap

O levels PHYSICS 5054/42/M/J/18

2 A student investigates the reflection of light by a plane mirror. • She places the mirror vertically on a sheet of paper. • She uses a pencil to mark the position of the plane mirror with a straight line and labels the line XY. • She removes the mirror

O levels PHYSICS 5054/42/M/J/18

1 A student measures the resistance of a lamp when there are different currents in the lamp. She sets up the circuit shown in Fig. 1.1. A power supply Fig. 1.1 (a) On Fig. 1.1, draw the symbol for a voltmeter connected to measure the potential difference

O levels PHYSICS 5054/42/M/J/18

11 A smoke detector contains a small radioactive source of americium-241. The source emits alpha-particles. (a) (i) In the space below, draw a diagram of an apparatus that can be used to show that the source emits alpha-particles.

O levels PHYSICS 5054/22/M/J/18

10 A student connects a battery to two resistors. The circuit diagram is shown in Fig. 10.1.The potential difference (p.d.) across the 40Ω resistor is 9.6V. (a) State what is meant by the potential difference across a resistor.

O levels PHYSICS 5054/22/M/J/18

9 Wind energy is a renewable energy source. A wind turbine and generator convert energy in the wind to electrical energy in a generator. Fig. 9.1 shows some wind turbines.

O levels PHYSICS 5054/22/M/J/18

8 A fuse is one form of protection in an electrical circuit. (a) State two other forms of protection that are included in household electrical circuits. These may protect the consumer, the circuit or an electrical appliance

O levels PHYSICS 5054/22/M/J/18

7 A computer hard disk contains a layer of a magnetic material. (a) Describe how a magnet is used to find out if a sample of material is magnetic or non-magnetic.

O levels PHYSICS 5054/22/M/J/18

6 A converging lens has a focal length of 3.0cm. An object of height 2.0cm is placed 5.0cm from the centre of the lens. Fig. 6.1 shows the arrangement of the object and the lens.

O levels PHYSICS 5054/22/M/J/18

5 A microwave signal from a transmitter on the Earth’s surface is sent up to a satellite in orbit and is then immediately transmitted back to Earth. (a) A pulse of microwaves from the transmitter is received back at the transmitter 0.24s later. The speed

O levels PHYSICS 5054/22/M/J/18

4 One form of latent heat is the thermal energy needed to melt a solid. (a) Define specific latent heat. (b) Fig. 4.1 shows one method of measuring the thermal energy needed to melt ice. The ice is contained in a glass funnel and covered with an insulato

O levels PHYSICS 5054/22/M/J/18

3 Equal volumes of metal, water and air are heated from 20°C to 80°C. (a) State whether the metal, the water or the air expands the most. (b) Fig. 3.1 is a diagram of the metal at 20°C. The metal is a large, square sheet with a square hole at its centre.

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2 In an experiment, a student takes measurements and determines the extension of a spring for different loads. The apparatus is shown in Fig. 2.1.

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1 A student drops a small metal object into a cylinder of oil. The object falls alongside a vertical ruler and a camera records its position at 1.0s intervals, as shown in Fig. 1.1.

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40 How many nucleons are in one neutral atom of the krypton isotope Kr?

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39 An oscilloscope is used to measure potential difference (p.d.). The trace with no input connected is shown.

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38 The circuit diagram shows a variable resistor R connected in parallel to the lower half of a potential divider.

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37 Which symbol is used for a light-dependent resistor?

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36 A step-down transformer has a primary coil and a secondary coil wound on a soft-iron core. The primary coil is connected to a 6.0V direct current (d.c.) supply. Which statement about the transformer is correct?

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35 V is a potential difference, I is a current, R is a resistance, and t is a time. Which expression has units of energy? A It B I 2 R C VIt D R V2

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34 The diagram shows an alarm system. P What happens when battery P is disconnected? iron armature bell A falls rings B falls stops ringing C moves up rings D moves up stops ringing

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33 What is one of the uses of ultrasound? A cleaning jewellery B satellite communication C fluorescent tubes D optical fibres

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32 Which frequency is in the range heard by a healthy human ear?

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31 The diagram shows a loudspeaker that is producing a continuous sound wave of frequency 200Hz in air. loudspeaker P Which diagram best shows how the sound wave causes a molecule at P to move during s 200 1 ?

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30 A television controller emits an infra-red beam. Which statement about infra-red radiation is correct? A It causes ionisation. B It consists of longitudinal waves. C It has a higher frequency than ultra-violet light. D It travels at the speed of light.

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29 Which device uses total internal reflection? A magnifying glass B optical fibre C photographic enlarger D projector

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28 Which statement about blue light is correct? A Blue light has a smaller frequency than red light. B Blue light has a longer wavelength than red light. C Blue light has the same speed in glass as red light. D Blue light is refracted more by a glass pris

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27 The diagram shows two divergent rays of light from an object O being reflected from a plane mirror. At which position is the image formed?

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26 A communications system uses microwaves with a wavelength of 15 cm. The speed of light is 3.0 × 108 m / s. What is the frequency of the microwaves?

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25 The diagrams show four identical cans with their outside surfaces either polished silver or painted dull black. Each can contains the same volume of water, initially at 80 °C. After five minutes in a cool room, which can contains the coolest water?

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24 Samples of four different materials at room temperature are heated from below and heat is transferred upwards. In which material is all of the heat transferred by the vibration of molecules?

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23 The resistance R of a wire increases uniformly with temperature. The values of R at the fixed points are shown in the table.

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22 The diagrams represent four thermometers. Which thermometer has the greatest sensitivity and which thermometer has the greatest range?

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21 The diagram shows a thermometer. What is in region X of the capillary tube? A a vacuum B alcohol C steam D water

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20 Equal masses of copper and water are heated to the same temperature. As they cool down, the copper and the water lose thermal energy at the same rate. The temperature of the copper falls faster. Why is this?

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19 A sealed container of gas is heated and the pressure inside increases. What happens to the molecules of the gas to cause this increase in pressure?

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18 A sealed packet containing air and a snack is purchased at an airport. The sealed packet is taken on board an aircraft. During the flight the packet becomes larger.

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17 The diagram shows a simple mercury barometer. Which height is a measure of the atmospheric pressure?

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16 Five blocks have the same mass but different base areas. They all rest on a horizontal table.

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15 Work is done when a force of 400N pulls a crate of weight 500 N at a constant speed along a ramp, as shown.

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14 Which power station produces carbon dioxide when operating? A gas-fired power station B geothermal power station C nuclear power station D wind power station

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13 Four objects of equal mass rest on a table. The centre of mass of each object is labelled G. Which object is the least stable?

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12 The graph shows extension-load curves for four fibres. Which fibre is the most difficult to stretch over the range of loads shown?

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11 A force of 1600N accelerates a car, of mass 800 kg, from rest. What is the car’s acceleration and its velocity after 4.0 s?

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10 Two objects X and Y are suspended from a uniform rod, pivoted at its centre. The rod is in equilibrium.

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9 A body of mass 10 kg falling freely in the gravitational field close to the Moon’s surface has an acceleration of 1.6 m / s2 . What is the gravitational field strength on the Moon?

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8 A block of metal is placed on an electronic balance to record its mass.What is the unit of the reading on the electronic balance and what is the unit of weight?

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7 A uniform rod of weight 5.0 N is held initially at rest. The diagram shows the forces acting on the rod when it is released.

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6 Which forces act on a skydiver who is falling at terminal velocity? A air resistance and weight B air resistance only C weight only D no forces act

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5 The planets in the Solar System orbit the Sun. Which statement is correct? A There is a force on each planet away from the Sun. B There is a force on each planet in the direction in which it travels. C There is a force on each planet opposite to the dir

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4 Micrometers, metre rules, tapes and calipers are used for measuring lengths. Which row identifies the most suitable device for accurately measuring the stated length?

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3 What is the name and value of the unit of power written as mW? name value A megawatt 10–3W B megawatt 106W C milliwatt 10–3W D milliwatt 106W

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2 Forces of 4.0 N and 2.0N act at a point. Which scale diagram shows the forces that have a resultant of 4.0N?

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1 Which is a vector quantity? A a mass of 2.0 kg B a temperature of –10 °C C a weight of 15N D an average speed of 20m / s

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2 Two forces F1 and F2 act on an object O in the directions shown. F1 F2 O What is the direction of the resultant force?

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1 What is the reading on this micrometer? A 5.43mm B 6.63mm C 7.30mm D 8.13mm

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4 A student investigates the distance travelled by a block of wood along a bench when the block is fired by a rubber band. Fig. 4.1 shows the block of wood being fired.

O levels PHYSICS 5054/04/O/N/07

3 Fig. 3.1 on page 7 shows a rectangular glass block used in a light experiment. The path of a ray of light incident on one face of the glass block is marked with pins P1 and P2. The path of the emergent ray after passing through the block is marked by pi

O levels PHYSICS 5054/04/O/N/07

2 Fig. 2.1 shows a long vertical wire passing through a horizontal white card. The apparatus is used to show the shape of the magnetic field around the wire.

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1 A student uses the apparatus shown in Fig. 1.1 to measure the terminal velocity of a metal sphere falling through oil.

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11 (a) Fig. 11.1 shows a ray of light passing through the edge of a converging lens. (i) Describe what happens to the direction of the ray of light as it enters and leaves the lens. [2] (ii) State what happens to the speed, frequency and wavelength of th

O levels PHYSICS 5054/02/O/N/07

10 (a) Describe an experiment to show the difference between an electrical insulator and an electrical conductor. Name one example of each. [4] (b) Fig. 10.1 is a sketch graph of the current in a component P against the potential difference (p.d.) across

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9 Many cars are fitted with an air-bag, as shown in Fig. 9.1. In a collision, the air-bag inflates and reduces the effect of the impact between the passenger and the dashboard.

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8 EITHER The Y-plates of a cathode-ray oscilloscope (CRO) are connected to an alternating voltage of amplitude 4.0 V and frequency 25 Hz. The Y-gain of the CRO is set at 2.0 V / division and the time-base is set at 0.01 s / division. On the grid below, dr

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7 Fig. 7.1 shows apparatus that can be used to make an electromagnet or a permanent magnet. copper wire cardboard tube Fig. 7.1 Four rods are available. They are made of aluminium, soft iron, steel and wood. (a) (i) State which rod is used to make a pe

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6 Fig. 6.1 shows the cone of a loudspeaker. Fig. 6.1 (a) Sound is being produced. Describe in detail the behaviour of the cone and the air near to it.

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5 Fig. 5.1 shows the arrangement of atoms in a solid block.

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4 Fig. 4.1 shows equipment placed on top of a house that uses solar energy to produce hot water.

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3 One type of renewable energy source is shown in Fig. 3.1.

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2 A student measures the mass and the volume of four samples of rock A, B, C and D. The results are shown in Fig. 2.1.

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1 A parachutist jumps from an aircraft. Some time later, the parachute opens. Fig. 1.1 is a graph of the vertical speed of the parachutist plotted against time t.

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40 The neutral atoms of all isotopes of the same element contain the same number of A electrons and protons. B electrons and neutrons. C neutrons only. D neutrons and protons.

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39 The half-life of a radioisotope is 2400 years. The activity of a sample is 720 counts / s. How long will it take for the activity to fall to 90 counts / s?

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38 An experimenter sets up the following apparatus, in air, to discover whether a radioactive source is emitting alpha-particles.

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37 In the circuit shown, all lamps are identical and all cells are identical. The resistance of the coil of the reed switch is negligible.

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36 The diagram shows transformers and cables used to transmit electrical energy over long distances.

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35 A small coil is connected to a sensitive ammeter. The ammeter needle can move to either side of the zero position. As the magnet falls towards the coil, the ammeter needle moves quickly to the right of the zero position.

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34 Which single-coil motor will have the largest turning effect?

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33 The diagram shows a beam of electrons entering a magnetic field. The direction of the field is into the page.

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32 The case of an electric fan is earthed. The plug to the fan contains a 5 A fuse. There is a current of 4A when the fan works normally. The cable to the fan becomes so worn that the live wire makes electrical contact with the metal case.

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31 Energy is represented by the letter E, current by I, power by P, charge by Q, p.d. by V and time by t. Which pair of equations is correct?

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30 The following circuit is set up.What is the reading on the ammeter?

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29 A student sets up the circuit shown.

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28 A battery is used to light a 24W electric lamp. The battery provides a charge of 120C in 60s. 24W

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27 Under which condition does Ohm’s law apply? A The current must be constant. B The power must be constant. C The temperature must be constant. D The voltage must be constant.

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26 A positively charged insulated metal sphere is brought close to, but not touching, a similar uncharged metal sphere.

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25 Which part of a video tape recording system does not rely on magnetic material for its operation?

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24 The diagram shows a model railway signal. What does the end P do when the switch is closed?

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23 A flash of lightning and the corresponding thunder clap are detected 6 s apart. It is calculated that the lightning struck about 1800m away.

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22 Which does not normally use infra-red radiation?

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21 Which diagram correctly shows the dispersion of white light by a glass prism?

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20 The diagram shows a ray of light reflected from a plane mirror.

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19 The diagram shows the refraction of water waves as they cross a boundary in a ripple tank.

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18 Water at the top of a hot-water tank is heated and the water becomes hot. No water enters or leaves the tank.

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17 The diagram shows the design for an alarm.

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16 The graph shows the cooling curve of a hot substance.

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15 Which instrument is most suitable for measuring a rapidly changing temperature?

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14 On a hot day, a drink in a bottle can be kept cool by standing it in a bowl of water and placing a wet cloth over it.

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13 Which of the following correctly compares the forces between the molecules in steam, water and ice?

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12 Four different liquids are poured into identical measuring cylinders. The diagrams show the depths of the liquids and their densities. Which liquid causes the largest pressure on the base of its measuring cylinder?

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11 The efficiency of an electrical generator is 65%. Which useful output can be expected if the energy input to the generator is 12kJ?

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10 A crane moves its load diagonally, as shown. By what distance is the weight of the load multiplied in order to calculate the increase in gravitational potential energy of the load?

O levels PHYSICS 5054/01/O/N/07

9 A 2 kg mass is moving at constant speed. The kinetic energy of the mass is 400J. What is the speed of the mass?

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8 A spring balance is calibrated to give readings in newtons. The graph shows how the length of the spring varies with the load.

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7 The diagram shows a boy of weight 500N sitting on a see-saw. He sits 2.0m from the pivot. What is the force F needed to balance the see-saw?

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6 A body of mass 10 kg falling freely in the gravitational field close to the Moon’s surface has an acceleration of 1.6m/ s2 . What is the gravitational field strength on the Moon?

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5 A car moves in a circle at a constant speed. What is the direction of the resultant force acting on the car?

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4 When a body moves across a rough surface, a frictional force is produced. rough surface moving body Which statement about this force is always true?

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3 The speed-time graph for a falling skydiver is shown below. The skydiver alters his fall first by spreading his arms and legs and then by using a parachute. Which part of the graph shows the diver falling with terminal velocity?

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2 Forces of 30N and 50N act on the same body, but in different directions. Which value could not be the resultant force on the body?

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1 In an experiment, a ball is rolled down a curved track that is about half a metre long. 0.5 m Which measuring device should be used to measure the length accurately?

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40 A nuclide has the notation X 48 23 . Which line in the table describes a different isotope of this nuclide?

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39 The diagram shows one type of radiation passing between the poles of a strong magnet and being detected.

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38 Which statement is true for all three types of radioactive emission (alpha-particles, beta-particles and gamma-rays)? A They are completely absorbed by a thin aluminium sheet. B They are deflected by electric fields. C They emit light. D They ionise ga

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A waveform is displayed on a cathode-ray oscilloscope. The length of three cycles of the waveform is 6cm. The vertical gain and the time-base settings are shown on the diagram.

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36 A simple a.c. generator produces an alternating e.m.f. as shown.

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35 The diagram shows how a magnet and a coil may be used to induce an electric current.

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34 In a d.c. motor, the coil is wound on a soft iron cylinder. Why is soft iron used? A to increase the strength of the magnetic field B to increase the weight of the coil C to insulate the coil from the magnet D to prevent the coil from spinning too quic

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33 The diagrams show the forces F between two wires carrying currents out of the page. The magnetic fields close to the wires are also shown. Which diagram is correct?

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32 Which circuit shows the correct positions for the fuse and the switch in the lighting circuit of a house?

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31 The diagram shows the circuit for a hair-dryer. P Q R heater heater fan The fan has a power rating of 0.1 kW and the heaters each have a rating of 0.4 kW. The cost of electricity is 8cents/kWh. What is the cost of running the dryer for two hours w

O levels PHYSICS 5054/01/M/J/07

30 The diagram shows a circuit. R 1Ω A V 3V 0.5A The ammeter has negligible resistance. What is the resistance of the resistor R?

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29 At which point in the circuit is the current the smallest?

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28 Which graph best represents how current I varies with voltage V in a component in which the resistance increases as the current increases.

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27 Which factors will both increase the resistance of a wire in a circuit? size of wire temperature of wire A longer lower B shorter lower C thicker higher D thinner higher

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26 Two uncharged metal spheres, not touching one another, are suspended by means of cotton thread. A positively charged rod is brought near. Which diagram shows what happens to the spheres?

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25 Four metal rods are placed, in turn, inside a coil of copper wire. current in coil paper clips metal rod Each rod is used to pick up as many paper clips as possible. The current is then switched off. The table gives the results of the experiment.

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24 The diagram shows a brass rod and an iron rod beside each other at the bottom of a rectangular coil.

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23 A girl, standing 150 m in front of a tall building, fires a shot using a starting pistol. A boy, standing 350m from the girl, hears two bangs 1s apart. girl boy 150 m 350 m From this information, what is the speed of sound in air?

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22 Which type of wave is used to send telephone signals to and from a satellite? A infra-red waves B light waves C microwaves D sound waves

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21 What happens to light as it passes from glass into air? A Its frequency decreases because its speed decreases. B Its frequency increases because its speed increases. C Its wavelength decreases because its speed decreases. D Its wavelength increases bec

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20 The diagram shows a child using a periscope to look at an object on the other side of a wall. wall periscope Which diagram shows a correctly drawn ray of light from the object?

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19 The diagram shows a water wave in a ripple tank.The wave has a speed of 12cm/ s at R. The wave crosses a boundary PQ where the distance between crests changes from 3.0 cm to 1.5cm. What is the speed of the wave at S?

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18 A double-glazed window has two sheets of glass separated by a layer of air. Thermal energy is conducted and convected through the layer of air. The amount of conduction and convection varies with the thickness of the layer of air, as shown in the graph

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17 Fillings in teeth should be made from a material which A expands more than the tooth when heated. B expands by the same amount as the tooth when heated. C expands less than the tooth when heated. D does not expand when heated.

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16 What is the definition of heat capacity? A the quantity of heat required to raise the temperature of an object through 1°C B the quantity of heat required to raise the temperature of 1kg of a substance through 1°C C the quantity of heat required to con

O levels PHYSICS 5054/01/M/J/07

15 A thermocouple thermometer uses a voltmeter to measure the e.m.f. generated between two junctions. The junctions are at temperatures t1 and t2. To calibrate the thermometer, fixed points are needed. V t1 t2 What are the values of t1 and t2 when the

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14 What describes the molecular structure of a liquid? distance between the molecules motion of the molecules strength of forces between the molecules A close together stationary very strong B close together random fairly strong C far apart stationary

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13 A liquid is heated. Which statement is incorrect? A The molecules expand. B The molecules gain energy. C The molecules move further apart. D The molecules move faster.

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12 A gas is trapped inside a cylinder by a movable piston. The length of the gas column is 50cm and the pressure inside the cylinder is p. 50 cm p gas The piston is pushed in a distance of 30cm, so that the length of the gas column is now 20cm. The tem

O levels PHYSICS 5054/01/M/J/07

11 Which formula gives the efficiency of an energy conversion? A efficiency = total energy input - useful energy output B efficiency = useful energy output × total energy input C efficiency = total energy input useful energy output D efficiency = useful

O levels PHYSICS 5054/01/M/J/07

Four students exercise in a gym. Which student does the most work? exercise time/ s power developed/W A 50 250 B 100 150 C 200 200 D 250 30

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9 The diagram shows a battery-operated motor lifting a block of wood at constant speed. + – battery motor pulley wood What is the overall energy change taking place? A chemical → gravitational potential B gravitational potential → electrical C gravit

O levels PHYSICS 5054/01/M/J/07

8 A steel spring is stretched by a load. The load is increased. At first the extension is proportional to the load. The spring reaches its limit of proportionality at L. Which is the correct graph of the extension against load for the spring? extension

O levels PHYSICS 5054/01/M/J/07

7 Forces are applied to a uniform beam pivoted at its centre. Which beam is balanced?

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6 A student does an experiment to estimate the density of an irregularly-shaped stone. Which items of equipment are needed? A a balance and a measuring cylinder containing water B a balance and a ruler C a ruler and a measuring cylinder containing water D

O levels PHYSICS 5054/01/M/J/07

5 The propeller on a boat pushes water backwards with a force of 2000N. The boat moves through the water against a total resistive force of 1800N. direction of motion of boat 1800N 2000N resistive force force of propeller on water According to Newton’s

O levels PHYSICS 5054/01/M/J/07

4 A car is brought to rest in 5s from a speed of 10 m/ s. What is the average deceleration of the car? A 0.5 m/ s2 B 2m/ s2 C 15m/ s2 D 50m/ s2

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3 A student drops a table-tennis ball in air. What happens to the velocity and to the acceleration of the ball during the first few seconds after release? velocity acceleration A decreases decreases B decreases increases C increases decreases D increases

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2 Which of the following correctly lists one scalar and one vector quantity? scalar quantity vector quantity A displacement work B energy force C force acceleration D velocity mass

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1 The width of a wooden block is measured using vernier calipers.What is the width of the block? A 3.5mm B 5.3mm C 8.0 mm D 8.5mm

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4 The apparatus shown in Fig. 4.1 and in Fig. 4.2 is used in an experiment. 0 1 N 2 3 4 5 6 7 8 9 10 0 1 N 2 3 4 5 6 7 8 9 10 Fig. 4.1 Fig. 4.2 (a) (i) Name the measuring instrument in Fig. 4.1. (ii) Use Fig. 4.1 to measure the weight W1 of the block

O levels PHYSICS 5054/04/M/J/07

3 Fig. 3.1 shows the apparatus used to investigate the cooling of some water. thermometer water test-tube Fig. 3.1 The initial temperature of the water is 90 °C and the temperature of the room is 20 °C. (a) A student uses the thermometer and stopwatch

O levels PHYSICS 5054/04/M/J/07

2 (a) Fig. 2.1 shows a ray of light incident on a plane mirror. incident ray plane mirror Fig. 2.1 (i) On Fig. 2.1, draw the normal at the point where the ray strikes the mirror. [1] (ii) Measure the angle of incidence. angle of incidence = ...........

O levels PHYSICS 5054/04/M/J/07

1 A chain of paper-clips is suspended from a horizontal pin, as shown in Fig. 1.1. side view fiducial marker front view pin Fig. 1.1 The bottom paper-clip is pulled to one side and then released. A student measures the time T for one oscillation of t

O levels PHYSICS 5054/04/M/J/07

11 A plastic rod is rubbed with a cloth and becomes negatively charged. (a) Explain how the rod becomes negatively charged when rubbed with a cloth. [2] (b) An uncharged metal-coated sphere hangs from an insulating thread. The sphere is brought near to th

O levels PHYSICS 5054/02/M/J/07

10 A farmer connects a house to the mains electricity. The house is a long way from the nearest 230 V mains electricity supply. Fig. 10.1 shows the mains supply connected to the house. 230V mains supply Fig. 10.1 (a) The farmer uses 230 V lamps in the ho

O levels PHYSICS 5054/02/M/J/07

9 Fig. 9.1 shows the horizontal forces acting on a moving car. force A force B Fig. 9.1 (a) Compare the sizes and directions of the two forces when the car is (i) moving along a straight road at constant speed, [1] (ii) accelerating. [1] (b) Suggest the

O levels PHYSICS 5054/02/M/J/07

8 (a) Explain how it is possible for an element to have different isotopes. (b) State what is meant by the half-life of a radioactive isotope. (c) Fig. 8.1 shows how the number of atoms of a radioactive isotope changes with time.

O levels PHYSICS 5054/02/M/J/07

7 Fig. 7.1 shows an electrical circuit containing a 12 V power supply and a number of resistors. 3Ω 2Ω 4Ω 6Ω 12V A Fig. 7.1 (a) Calculate the combined resistance of (i) the 2 Ω and 4 Ω resistors in series, resistance =

O levels PHYSICS 5054/02/M/J/07

6 Fig. 6.1 shows a coil of wire wound on a cardboard tube. There is a d.c. current in the coil. The direction of the current is shown in the key. wire with current into page key wire with current out of page cardboard tube Fig. 6.1 (a) On Fig. 6.1, draw

O levels PHYSICS 5054/02/M/J/07

5 Fig. 5.1 is drawn full scale. The focal length of the lens is 3.0 cm.(a) On Fig. 5.1, draw two rays from the top of the object O that meet at the image. [2] (b) (i) Define the term linear magnification.

O levels PHYSICS 5054/02/M/J/07

Fig. 4.1 shows part of an optical fibre.The ray PQ undergoes total internal reflection in the optical fibre. (a) On Fig. 4.1, continue the path of ray PQ until it reaches end R. [1] (b) Explain what is meant by total internal reflection.

O levels PHYSICS 5054/02/M/J/07

Fig. 3.1 shows a thermometer.(a) Explain how to calibrate a thermometer.(b) (i) State the range of the thermometer in Fig. 3.1.

O levels PHYSICS 5054/02/M/J/07

A student investigates the evaporation of water. He pours 100 cm3 of water into measuring cylinder A and 100 cm3 of water into measuring cylinder B. Measuring cylinder A is kept at 40 °C and B is kept at 80 °C in the same part of the laboratory. Fig. 2.1

O levels PHYSICS 5054/02/M/J/07

Two athletes, A and B, run a 100 m race. At time t = 0, a gun is fired to start the race. Fig. 1.1 shows the distance-time graph for the two athletes.

O levels PHYSICS 5054/02/M/J/07

40 An isotope of lead, Pb 212 82 , is radioactive. After three decays, two beta-particles and an alpha-particle have been emitted. Another radioactive isotope of lead is formed. What is the mass number (nucleon number) of the new isotope of lead? A 200 B

O levels PHYSICS 5054/12/O/N/19

39 Radioactive substances are used as tracers in medical examinations. A liquid tracer is injected into a patient. A detector 20 cm above the patient shows where the radioactive substance is in the body. What is the best radioactive substance to use? A an

O levels PHYSICS 5054/12/O/N/19

38 A thermistor warms up as the current in it increases. Which graph shows how the voltage V across the thermistor changes as the current I through it is increased?

O levels PHYSICS 5054/12/O/N/19

37 Transformers are used to transmit electrical energy between power stations and transmission cables, as shown.

O levels PHYSICS 5054/12/O/N/19

36 A mains electric circuit is fitted with a circuit breaker rather than a fuse. Where is the circuit breaker connected and what happens when the current is too large? A circuit breaker is connected in« When the current is too large« A the live wire. a th

O levels PHYSICS 5054/12/O/N/19

35 A hotplate on an electric cooker contains two identical resistors. The switch has three positions. position 1 The two resistors are connected in series to the mains supply. position 2 The two resistors are connected in parallel to the mains supply. pos

O levels PHYSICS 5054/12/O/N/19

34 An ammeter is connected to three resistors and a power supply. Which arrangement of resistors gives the greatest ammeter reading?

O levels PHYSICS 5054/12/O/N/19

33 Resistors of different resistances are connected to a power supply in either a parallel circuit or a series circuit. Which statement is correct? A The current is the same in all resistors connected in parallel. B The current is the same in all resistor

O levels PHYSICS 5054/12/O/N/19

32 Which symbol does not represent a power source?

O levels PHYSICS 5054/12/O/N/19

31 The diagram shows a metal lightning conductor attached to a building.Why is the lightning conductor made of copper? A Both positive and negative charges can flow through copper. B Copper can be electrostatically charged. C So the lightning conductor ha

O levels PHYSICS 5054/12/O/N/19

30 A metal plate X is attached to earth by a battery. The plate has a positive charge. A second metal plate Y is initially uncharged and connected to earth. This plate is positioned parallel to X.

O levels PHYSICS 5054/12/O/N/19

29 The diagram shows two magnetic field lines of the magnetic field around two bar magnets. P Q Which row shows the magnetic poles at end P and end Q of the two magnets? P Q A N N B N S C S N D S S

O levels PHYSICS 5054/12/O/N/19

28 A man stands 80 m in front of a cliff face. He makes a loud bang and listens for the echo. He makes a loud bang once every second. He hears an echo exactly halfway between the bang that caused it and the next bang. What is the speed of sound? A 40 m /

O levels PHYSICS 5054/12/O/N/19

27 Which row shows the speed of sound in air (ca), liquid (cL) and solid (cs) in order from slowest to fastest? slowest fastest A cL cs ca B cL ca cs C ca cL cs D cs cL c

O levels PHYSICS 5054/12/O/N/19

26 An object is placed in front of a converging lens of focal length 4.0 cm. The height of the image is 6.0 cm. The arrangement is shown on the scale diagram

O levels PHYSICS 5054/12/O/N/19

25 The diagram shows light passing from glass into air. What is the name of angle P? A the angle of incidence B the angle of reflection C the angle of refraction D the critical angle

O levels PHYSICS 5054/12/O/N/19

24 An object O is placed in front of a plane mirror. I is the image formed. A ray from the top of the object is incident on the mirror at X. What happens to this ray? A It reflects and passes through the bottom of O. B It reflects and passes through the t

O levels PHYSICS 5054/12/O/N/19

23 Here are four statements about wavefronts. 1 Wavefronts from a point source are straight lines. 2 Wavefronts from a point source are circular. 3 Wavefronts are parallel to the direction of energy movement. 4 Wavefronts are perpendicular to the directio

O levels PHYSICS 5054/12/O/N/19

22 Which description defines the amplitude of a water wave in a ripple tank? A half of the vertical distance between a trough and a peak B the horizontal distance between adjacent peaks C the horizontal distance between a trough and an adjacent peak D the

O levels PHYSICS 5054/12/O/N/19

21 A metal disc is heated to 600 °C and then lowered into a beaker of water. What happens to the mass of the metal disc and to the mass of the water in the beaker? mass of metal disc mass of water in beaker A increases decreases B increases no change C no

O levels PHYSICS 5054/12/O/N/19

20 A syringe containing air is sealed at one end. The piston is free to move. The air is heated. What happens to the average distance between air molecules and the density of the air? average distance between air molecules density of the air A increases d

O levels PHYSICS 5054/12/O/N/19

19 How is specific latent heat defined? A the heat absorbed or emitted by unit mass during a change of a state without a temperature change B the heat absorbed or emitted by unit mass during unit temperature change C the heat absorbed or emitted during a

O levels PHYSICS 5054/12/O/N/19

18 A student makes four statements about evaporation and boiling. 1 Both involve an increase in molecular separation. 2 Both occur only at a fixed temperature. 3 Both involve the absorption of thermal energy. 4 Both occur throughout the liquid. Which two

O levels PHYSICS 5054/12/O/N/19

17 A student is given a thermometer that reads 1 °C in pure melting ice and 101 °C in pure boiling water. She uses it to measure the temperature of some water before and after it is heated. How does the rise in temperature of the water calculated from her

O levels PHYSICS 5054/12/O/N/19

16 A student uses a newton meter to pull an object a distance d horizontally along a flat surface in a time of t. The newton meter reading is F. What is given by the expression (F × d)/ t? A efficiency B energy C power D work

O levels PHYSICS 5054/12/O/N/19

15 Where is energy released by the fusion of hydrogen nuclei to form helium? A in a nuclear power station B in a radioactive isotope emitting alpha-particles C in the core of the Earth D in the core of the Sun

O levels PHYSICS 5054/12/O/N/19

14 An object X has mass m and velocity v. A second object Y has mass 2m and velocity 2v. What is the value of the ratio kinetic energy of X kinetic energy of Y ? A 1 B 2 C 4 D 8

O levels PHYSICS 5054/12/O/N/19

13 Which graph shows the relationship between the pressure and the volume of a fixed mass of gas at constant temperature?

O levels PHYSICS 5054/12/O/N/19

12 The diagram shows three tubes P, Q and R. Each tube contains air trapped by a water column. Which statement is correct? A The pressure of the trapped air is equal in tubes P, Q and R. B The pressure of the trapped air is greatest in tube Q. C The press

O levels PHYSICS 5054/12/O/N/19

11 A load L is suspended from two springs that are in parallel. The extension of each spring is x. The springs are then arranged to hang vertically, one below the other. In this new arrangement, what is the total extension of the two springs? A 2 1 x B x

O levels PHYSICS 5054/12/O/N/19

10 A student balances a non-uniform object on a pivot. To do this, a weight is suspended near the left-hand end of the object, as shown. Where is the centre of mass of the object?

O levels PHYSICS 5054/12/O/N/19

9 The Earth travels at constant speed in a circular orbit around the Sun.Which arrows show the direction of the acceleration of the Earth and the direction of the velocity of the Earth? direction of acceleration direction of velocity

O levels PHYSICS 5054/12/O/N/19

8 A body slides down a frictionless slope, as shown. As the body presses on the surface, the surface pushes back on the body. In which direction does the surface push back on the body?

O levels PHYSICS 5054/12/O/N/19

7 In which descent is the acceleration equal to the acceleration of free fall g at all times? A a bungee jumper leaping from a bridge B a feather falling in a vertical tube that contains a vacuum C a hailstone travelling to Earth at terminal velocity D a

O levels PHYSICS 5054/12/O/N/19

6 The graph shows how the speed of a car varies with time. Which statement about the acceleration of the car between the times 10 s and 20 s is correct? A The acceleration decreases. B The acceleration increases. C The acceleration is constant, but not ze

O levels PHYSICS 5054/12/O/N/19

5 Part of a speed–time graph for two runners is shown. They are running along the same track. Which statement must be correct? A Both runners started at the same moment. B Runner 1 has a greater acceleration than runner 2. C Runner 1 is moving faster than

O levels PHYSICS 5054/12/O/N/19

4 A length of copper pipe, of uniform cross-section and several metres long, carries water to a tap. Measurements are taken to determine accurately the volume of copper in the pipe. Which instruments are used? A micrometer and rule B micrometer and calipe

O levels PHYSICS 5054/12/O/N/19

3 What is the correct unit for the quantity shown? quantity unit A electromotive force (e.m.f.) N B latent heat J C pressure kg /m3 D weight kg

O levels PHYSICS 5054/12/O/N/19

2 What is the size of the resultant of the two forces shown in the diagram? A 1.0N B 3.5N C 5.0N D 7.0N

O levels PHYSICS 5054/12/O/N/19

1 Which word is the name of a vector quantity? A density B displacement C energy D speed

O levels PHYSICS 5054/12/O/N/19

10 All the isotopes of the gas radon are radioactive. (a) State one similarity and one difference between the nuclei of two different isotopes of radon. similarity

O levels PHYSICS 5054/22/O/N/19

9 Fig. 9.1 shows a boiling liquid at its boiling point, trapped in a cylinder by a pistonThere is an electric heater in the liquid which is connected to a power supply. The thermal energy produced by the heater gradually turns the boiling liquid into a ga

O levels PHYSICS 5054/22/O/N/19

8 Fig. 8.1 shows an elastic rope (bungee). elastic rope (bungee) Fig. 8.1 The unstretched length of the rope is 0.80m. A student uses the hook at one end to suspend the rope from a shelf and hangs an empty paint can of mass 0.70kg from the other end. The

O levels PHYSICS 5054/22/O/N/19

7 Fig. 7.1 shows a horizontal, rectangular coil ABCD placed between a magnetic N-pole and an S-pole. There is a current in the coil. An upward force F of size 9.6 × 10–3N acts on side AB of the coil. (a) (i) Explain why there is a force on side AB.

O levels PHYSICS 5054/22/O/N/19

6 An electric circuit contains a 700Ω resistor and a light-dependent resistor (LDR). Fig. 6.1 is the circuit diagram The electromotive force (e.m.f.) of the battery is 12V. An oscilloscope is connected across the fixed resistor. Fig. 6.2 shows the oscillo

O levels PHYSICS 5054/22/O/N/19

5 Both sound and ultrasound are longitudinal waves. (a) Describe what is meant by longitudinal.

O levels PHYSICS 5054/22/O/N/19

4 In many countries, solid salt is produced by trapping sea-water in large, shallow ponds and letting the water evaporate. Fig. 4.1 shows salt being produced in this way. Fig. 4.1 (a) State two ways in which evaporation differs from boiling.

O levels PHYSICS 5054/22/O/N/19

3 Solar panels are used to heat water. (a) The energy absorbed by solar panels comes from the Sun. (i) Describe how this energy is produced inside the Sun.

O levels PHYSICS 5054/22/O/N/19

2 A student uses a pump to inflate a bicycle tyre. Fig. 2.1 shows the pump and the tyre.(a) The pressure of the trapped air in the pump is 3.8 × 105Pa and the cross-sectional area of the piston is 6.1 × 10–4m2. (i) Calculate the force exerted on the pist

O levels PHYSICS 5054/22/O/N/19

1 There is no atmosphere on the Moon. An astronaut on the Moon drops a feather and a hammer from the same height at the same time. They both accelerate downwards at 1.6m/s2 and they hit the ground at the same time. (a) The weight of the hammer is much lar

O levels PHYSICS 5054/22/O/N/19

4 A student investigates the refraction of light by a right-angled glass prism WXY. He uses a ray box to direct a ray of light towards side WY of the prism, as shown in Fig. 4.1.

O levels PHYSICS 5054/42/O/N/19

3 A student investigates the resistance of different lengths l of a metal wire PQ of total length 1.000m. • She sets up the circuit shown in Fig. 3.1.

O levels PHYSICS 5054/42/O/N/19

2 A student performs an experiment to measure the density of water. (a) • She places an empty test-tube on a top-pan balance, as shown in Fig. 2.1.

O levels PHYSICS 5054/42/O/N/19

1 A student in a laboratory investigates how the length l of a spring varies when different loads L are added to it. He sets up a spring in a clamp with a load of 1.0N attached to its lower end, as shown in Fig. 1.1.

O levels PHYSICS 5054/42/O/N/19

4 A box contains an unknown electrical component. This component is connected to two terminals P and Q on the outside of the box. A battery, an ammeter, a switch, a lamp and two crocodile clips are connected as shown in the circuit diagram of Fig. 4.1.

O levels PHYSICS 5054/42/M/J/19

3 A student investigates the maximum height h to which a ball bounces after hitting a laboratory bench. She sets up her apparatus as shown in Fig. 3.1.(a) She drops the ball from a height of 80cm above the bench, as shown in Fig. 3.1. After one bounce, t

O levels PHYSICS 5054/42/M/J/19

2 A student uses a ray box to investigate the refraction of a ray of blue light as it passes through a glass prism. He sets up the apparatus as shown in Fig. 2.1 on a piece of paper.

O levels PHYSICS 5054/42/M/J/19

1 A student determines an approximate value for the specific heat capacity of water by an electrical method. The specific heat capacity of a substance is the amount of thermal energy needed to raise the temperature of 1g of the substance by 1°C. He sets u

O levels PHYSICS 5054/42/M/J/19

11 (a) Stars are formed inside a cloud of gas and dust in space. When a star forms, the cloud first becomes smaller as it collapses. (i) State what causes the gas cloud to collapse

O levels PHYSICS 5054/22/M/J/19

10 Fig. 10.1 is a diagram of a soldering iron. Solder is a mixture of metals used to make a permanent contact between electrical wires.

O levels PHYSICS 5054/22/M/J/19

9 Fig. 9.1 shows a map of the route taken by a car as it travels from town A to town B.The journey involves a distance and a displacement. (a) (i) Using the scale on Fig. 9.1, determine the displacement in travelling from A to B.

O levels PHYSICS 5054/22/M/J/19

8 Fig. 8.1 shows a device that is used to show the force on an electron in an electric field(a) Explain how a continuous flow of electrons from the filament is produced in this apparatus(b) When an electron is in an electric field there is a force on the

O levels PHYSICS 5054/22/M/J/19

7 Fig. 7.1 shows a copper wire placed on two copper rods in the magnetic field between the poles of a magnet.The crocodile clip A touches the positive terminal of the battery. This causes the copper wire to move. (a) On Fig. 7.1, mark with an arrow the di

O levels PHYSICS 5054/22/M/J/19

6 Two lamps, P and Q, are connected to a battery of electromotive force (e.m.f.) 6.0V and an ammeter, as shown in Fig. 6.1.Lamp P has a resistance of 15Ω. The ammeter reading is 0.65A. (a) Calculate the current in lamp P. current =(b) Calculate the resist

O levels PHYSICS 5054/22/M/J/19

5 (a) Fig. 5.1 shows part of a machine used to investigate electrostatic charging. metal dome negatively charged belt P Fig. 5.1 Before the machine is switched on the metal dome and the ball are uncharged. When the machine is switched on, the metal dome

O levels PHYSICS 5054/22/M/J/19

4 A star emits electromagnetic radiation over a range of wavelengths. Fig. 4.1 shows the brightness of the radiation from the star at different wavelengths.Radiation from the star is brightest at one wavelength. (a) Determine the wavelength where the radi

O levels PHYSICS 5054/22/M/J/19

3 Fig. 3.1 shows three rays of light travelling in water from a light source S. One ray of light is totally internally reflected at the boundary between water and air (a) On Fig. 3.1, mark the critical angle and label it c. [1] (b) State why only one of t

O levels PHYSICS 5054/22/M/J/19

2 Fig. 2.1 shows a container of gas connected to a manometer. The tube in the manometer has a constant cross-sectional area.The gas in the container exerts a pressure. (a) Define the term pressure.(b) The density of mercury is 1.4 × 104 kg/m3. The gravita

O levels PHYSICS 5054/22/M/J/19

1 A student records the mass and volume of two irregular objects, one made of iron and the other of copper. The student uses the equipment shown in Fig. 1.1.(a) Describe how to determine the volume of an irregular object with the measuring cylinder.(b) Ca

O levels PHYSICS 5054/22/M/J/19

40 A proton has charge q and mass m. What is the charge and what is the mass of an alpha-particle? charge mass A q 2m B 2q 2m C 2q 4m D 4q 2m

O levels PHYSICS 5054/12/M/J/19

39 A car battery supplies a current in one direction. A current in the opposite direction recharges the battery. Which circuit recharges the battery, using an alternating current (a.c.) supply and a diode?

O levels PHYSICS 5054/12/M/J/19

38 A teacher uses the circuit shown. The identical lamps X and Y are connected to a low voltage a.c. power supply by high resistance transmission wires. Both lamps are switched on. Lamp X is then switched off. Lamp Y stays switched on. What happens to the

O levels PHYSICS 5054/12/M/J/19

37 A coil is rotating in a magnetic field. The coil is connected to an oscilloscope. The diagram shows the trace on the screen of the oscilloscope. The coil now speeds up and rotates twice as fast. Which diagram shows the new trace?

O levels PHYSICS 5054/12/M/J/19

36 The manufacturer of an electrical heater states that only one heater must be connected to the mains wiring through any fuse. The current in the circuit with only one heater is 9A. The fuse rating is 10A. Despite the warning, a second identical heater i

O levels PHYSICS 5054/12/M/J/19

35 The cable to an electric cooker contains a live wire, a neutral wire and an earth wire. When the cooker is working correctly, in which wires are the currents equal? A the live, the neutral and the earth B the live and the earth only C the neutral and t

O levels PHYSICS 5054/12/M/J/19

34 The diagram shows a simple electrical circuit. Which statement cannot be correct? A The current I is 2A. B The e.m.f. E is 12 J. C The p.d. V (across the resistor) is 10V. D The resistance R is 5Ω.

O levels PHYSICS 5054/12/M/J/19

33 The diagram shows a simple circuit. What happens when the resistance of the variable resistor is increased? A The lamps are dimmer and the motor rotates more quickly. B The lamps are dimmer and the motor rotates more slowly. C The lamps have the same b

O levels PHYSICS 5054/12/M/J/19

32 The diagram shows a car ignition switch and starter motor. The ignition switch is in a circuit with long, thin wires. The starter motor is in a circuit with short, thick wires. What is the explanation for the choice of wires? A Each circuit needs to co

O levels PHYSICS 5054/12/M/J/19

31 One end of each of two bars is marked with an X or a Y, as shown. End X of bar 1 is brought close to the N-pole and then to the S-pole of a magnet. End Y of bar 2 is brought close to the N-pole and then to the S-pole of the magnet. The table shows what

O levels PHYSICS 5054/12/M/J/19

30 The speed of sound in air is ca, the speed of sound in water is cw and the speed of sound in ice is ci. Which relationship is correct? A ca > ci B ca > cw C ci > cw D cw = ca

O levels PHYSICS 5054/12/M/J/19

29 What is the approximate range of audible frequencies for a healthy human ear? A 2.0Hz to 2.0kHz B 20Hz to 2.0kHz C 20Hz to 20kHz D 200Hz to 200 kHz

O levels PHYSICS 5054/12/M/J/19

28 The lens in the diagram produces an image I of the object O. Why is this not the ray diagram for a photographic enlarger? A The image is magnified. B The image is virtual. C The lens is a converging lens. D The lens is too thin.

O levels PHYSICS 5054/12/M/J/19

27 An object is placed at a distance from a converging lens that is equal to twice the focal length of the lens. Which statement about the image is correct? A It is enlarged. B It is inverted. C It is on the same side of the lens as the object. D It is vi

O levels PHYSICS 5054/12/M/J/19

26 Which waves are longitudinal? A gamma rays B light waves C ultrasound waves D X-rays

O levels PHYSICS 5054/12/M/J/19

25 A wave on water travels towards a stationary boat. As the wave passes, the boat starts to move up and down and gains kinetic energy from the wave. Which property of the wave changes as the wave passes the boat? A amplitude B frequency C speed D wavelen

O levels PHYSICS 5054/12/M/J/19

24 A gas is enclosed in a container of fixed volume. The gas gains heat energy from an external source. What happens to the molecules of the gas? A They expand. B They move faster inside the container. C They move further apart. D They vibrate with greate

O levels PHYSICS 5054/12/M/J/19

23 In low-pressure hydrogen, there are no forces between the molecules except during collisions with each other. Which statement describes the motion of a molecule between one collision and the next? A It moves with changing speed and continuously changes

O levels PHYSICS 5054/12/M/J/19

22 How is latent heat defined? A the thermal energy absorbed or emitted by unit mass during a change of state without a temperature change B the thermal energy absorbed or emitted by unit mass during unit temperature change C the thermal energy absorbed o

O levels PHYSICS 5054/12/M/J/19

21 Which statement is correct? A Infrared radiation cannot travel in a vacuum. B Infrared radiation cannot travel in solids or in gases. C Infrared radiation can only travel in a vacuum. D Infrared radiation can travel in a vacuum and in gases.

O levels PHYSICS 5054/12/M/J/19

20 A student suggests three different definitions for power. 1 energy transferred per second 2 force × distance moved 3 rate of doing work Which definitions are correct? A 1, 2 and 3 B 1 and 2 only C 1 and 3 only D 3 only

O levels PHYSICS 5054/12/M/J/19

19 Three solar panels have a total area of 7.2 m2 . Together, they produce 1.0 kW of power. An area of 1.0 m2 of each panel receives 0.80 kJ of energy from the Sun in 1.0 s. What is the efficiency of the solar panels? A 11% B 17% C 52% D 80%

O levels PHYSICS 5054/12/M/J/19

18 Which method of producing electricity does not use an a.c. generator? A geothermal power station B solar panels C wave-energy generators D wind turbine

O levels PHYSICS 5054/12/M/J/19

17 The diagram shows a small car of mass 500 kg approaching a hill. It moves up the hill with constant speed. The gravitational field strength g is 10 N/ kg. Ignoring friction, how much work is done in moving the car up the hill? A 5.0 × 103 J B 5.0 × 104

O levels PHYSICS 5054/12/M/J/19

16 An object is lifted. Which expression gives the increase in gravitational potential energy of the object? A mass multiplied by its velocity B mass multiplied by its acceleration C the rate at which work is done D weight multiplied by the increase in he

O levels PHYSICS 5054/12/M/J/19

15 The pressure on the gas contained in a sealed syringe is slowly doubled. The volume of the gas halves. What must be true about the density and the temperature of the gas? density temperature A decreases increases B increases decreases C increases rema

O levels PHYSICS 5054/12/M/J/19

14 The diagram shows a manometer containing mercury that is sealed at one end. What happens to the distance h when the manometer is taken higher up a mountain? A It decreases, because atmospheric pressure decreases with height. B It decreases, because atm

O levels PHYSICS 5054/12/M/J/19

13 A length of metal wire is made from a radioactive isotope of the metal. The diagram shows masses suspended from the end of the wire.

O levels PHYSICS 5054/12/M/J/19

12 The diagram shows a graph of load against extension for a material. At which point is the limit of proportionality?

O levels PHYSICS 5054/12/M/J/19

11 A large hook sticks into a pencil. The hook and pencil are balanced on the edge of a table, as shown. Where is the centre of mass of the hook and pencil?

O levels PHYSICS 5054/12/M/J/19

10 A uniform metre rule is balanced by a 4.0 N weight as shown. What is the weight W of the metre rule? A 1.0N B 4.0N C 16N D 40N

O levels PHYSICS 5054/12/M/J/19

9 Four objects of different masses are situated in places with different gravitational field strengths. Which object has the greatest weight? mass / kg N/kg gravitational field strength A 3.0 10.4 B 3.5 9.5 C 4.0 10.2 D 4.5 9.0

O levels PHYSICS 5054/12/M/J/19

8 The mass of object P is greater than the mass of object Q. The objects contain different amounts of matter and have a different resistance to change of motion. Which row is correct? greater amount of matter greater resistance to change of motion A P P B

O levels PHYSICS 5054/12/M/J/19

7 A force moves a box up a rough slope. The diagram shows four forces acting on the box. Which is the force due to friction on the box?

O levels PHYSICS 5054/12/M/J/19

6 A parachutist of mass 60 kg falls at a steady speed of 10m/ s. The gravitational field strength g is 10N/ kg. What is the upward force acting on the parachutist? A 0 B 6.0N C 60N D 600N

O levels PHYSICS 5054/12/M/J/19

5 Four of the gravitational forces that act between bodies in the Solar System are listed below. P the force on the Moon due to the Earth Q the force on the Earth due to the Sun R the force on the Earth due to the Moon S the force on the Moon due to the S

O levels PHYSICS 5054/12/M/J/19

4 The diagram shows the distance–time graph for a moving object. What is the moving object? A a ball thrown vertically upwards and falling back to the thrower B a car, starting from rest, speeding up as it moves away from a traffic signal C a rock dropped

O levels PHYSICS 5054/12/M/J/19

3 A cyclist travelling in a straight line at 8.0 m / s accelerates to 12 m / s in a time of 6.0 s. Which expression gives the cyclist’s acceleration? A 12 8 6 − B 12 6 8 − C 8 12 − 6 D 6 12 − 8

O levels PHYSICS 5054/12/M/J/19

2 A woman runs 2.0km from X to Y in 20 minutes and then rests at Y for 10 minutes. She then takes 10 minutes to run 1.6 km from Y to Z. What is the size of her average velocity for the journey from X to Z? A 0.060 km /minute B 0.080 km /minute C 0.090 km

O levels PHYSICS 5054/12/M/J/19

1 Which reading is given to one tenth of a millimetre? A 3.3 cm B 3.31 cm C 3.310 cm D 3.312 cm

O levels PHYSICS 5054/12/M/J/19

Computer memory size is measured in multiples of bytes. Four statements about computer memory sizes are given in the table. Tick (✓) to show if the statement is True or False.

O levels COMPUTER SCIENCE 2210/12/O/N/19