Cambridge A Level Physics 9702 — 2022 Feb/March Paper 1 · Variant 2

Question 1

1 What could not be a measurement of a physical quantity? A 10 K B 11 J N–1 m–1 C 17 Pa m3 N–1 D 25 T m

Accepted Answer

B

Question 2

2 A computer memory stick is labelled as having a storage capacity of 128 GB. The letter B stands for byte, which is a unit. What is the equivalent storage capacity? A 1.28  108 B B 1.28  1011 B C 1.28  1014 B D 1.28  1017 B

Accepted Answer

B

Question 3

3 A man of mass 75.2 kg uses a set of weighing scales to measure his mass three times. He obtains the following readings. mass / kg reading 1 80.2 reading 2 80.1 reading 3 80.2 Which statement describes the precision and accuracy of the weighing scales? A not precise to  0.1 kg and accurate to  0.1 kg B not precise to  0.1 kg and not accurate to  0.1 kg C precise to  0.1 kg and accurate to  0.1 kg D precise to  0.1 kg and not accurate to  0.1 kg

Accepted Answer

D

Question 4

4 Which statement about scalar and vector quantities is correct? A A scalar quantity has direction but not magnitude. B A scalar quantity has magnitude but not direction. C A vector quantity has direction but not magnitude. D A vector quantity has magnitude but not direction.

Accepted Answer

B

Question 5

5 How can the acceleration of an object be determined? A from the area under a displacement–time graph B from the area under a velocity–time graph C from the gradient of a displacement–time graph D from the gradient of a velocity–time graph

Accepted Answer

D

Question 6

6 A sprinter takes a time of 11.0 s to run a 100 m race. She first accelerates uniformly from rest, reaching a speed of 10 m s–1. She then runs at a constant speed of 10 m s–1 until the finish line. What is the uniform acceleration of the sprinter for the first part of the race? A 0.5 m s–2 B 0.91 m s–2 C 1.7 m s–2 D 5.0 m s–2

Accepted Answer

D

Question 7

7 A single horizontal force F is applied to a block X which is in contact with a separate block Y, as shown. F X Y The blocks remain in contact as they accelerate along a horizontal frictionless surface. Air resistance is negligible. X has a greater mass than Y. Which statement is correct? A The acceleration of X is equal to force F divided by the mass of X. B The force that X exerts on Y is equal to F. C The force that X exerts on Y is less than F. D The force that X exerts on Y is less than the force that Y exerts on X.

Accepted Answer

C

Question 8

8 A car of mass 750 kg has a horizontal driving force of 2.0 kN acting on it. It has a forward horizontal acceleration of 2.0 m s–2. resistive force driving force What is the resistive force acting horizontally? A 0.50 kN B 1.5 kN C 2.0 kN D 3.5 kN

Accepted Answer

A

Question 9

9 An object falls freely from rest in a vacuum. The graph shows the variation with time t of the velocity v of the object. v 0 0 t Which graph, using the same scales, represents the object falling in air? A B C D v v v v 0 0 0 0 0 t 0 t 0 t 0 t

Accepted Answer

C

Question 10

10 A rock of mass 2m, travelling in deep space at velocity v, explodes into two parts of equal mass, one of which is then stationary. What is the kinetic energy of the moving part after the explosion? A 1 mv2 B mv2 C 3 2 mv2 D 2mv2 2

Accepted Answer

D

Question 11

11 A horizontal metal bar PQ of length 50.0 cm is hinged at end P. The diagram shows the metal bar viewed from above. 16.0 N 30° Q 5.0 N P 50.0 cm Two forces of 16.0 N and 5.0 N are in the horizontal plane and act on end Q, as shown. What is the resultant moment about P due to the two forces? A 1.5 N m B 4.4 N m C 6.5 N m D 9.4 N m

Accepted Answer

A

Question 12

12 A cube WXZY has sides of length 2.0 cm and mass 24.0 g. The cube rests on a metre rule of negligible mass. The geometrical centre of the cube is vertically above the 70.0 cm mark on the scale of the rule. mass 24.0 g mass W X NOT TO 23.4 g SCALE Y Z 30 50 69 71 The cube has a non-uniform density so that its centre of gravity is not at its geometrical centre. The centre of gravity of the cube is in the plane of the diagram. The rule rests on a pivot at the 50.0 cm mark. A mass of 23.4 g is placed vertically above the 30.0 cm mark. The rule is horizontal and in equilibrium. What can be determined about the position of the centre of gravity of the cube? A It must be somewhere along a horizontal line that is 0.5 cm from line WX. B It must be somewhere along a horizontal line that is 0.5 cm from line YZ. C It must be somewhere along a vertical line that is 0.5 cm from line WY. D It must be somewhere along a vertical line that is 0.5 cm from line XZ.

Accepted Answer

C

Question 13

13 A rigid sphere is held at rest on the sea bed. When the sphere is released, it rises to the surface of the sea. The seawater has a uniform density. Which statement about the sphere, from its release until it reaches the surface, is correct? A The sphere always moves with constant acceleration. B The sphere always moves with constant velocity. C The upthrust on the sphere always decreases. D The upthrust on the sphere is always constant.

Accepted Answer

D

Question 14

14 What is a unit for density? A N m–3 B g mm–1 C kg cm–2 D g mm–3

Accepted Answer

D

Question 15

15 The total energy input Ein in a process is partly transferred to useful energy output U and partly transferred to energy that is wasted W. What is the efficiency of the process? A U 100% E in B W  100% E in C U  100% W U  W  100% D E in

Accepted Answer

A

Question 16

16 An escalator is 60 m long and lifts passengers through a vertical height of 30 m, as shown. 30 m 60 m To drive the escalator against the forces of friction when there are no passengers requires a power of 2.0 kW. The escalator is used by passengers of average mass 60 kg and the power to overcome friction remains constant. How much power is required to drive the escalator when it is carrying 20 passengers and is travelling at 0.75 m s–1? A 4.4 kW B 6.4 kW C 8.8 kW D 10.8 kW

Accepted Answer

B

Question 17

17 A rock of mass 40 kg is released from rest from a height of 20 m above the surface of a planet. The rock has a kinetic energy of 32 kJ when it hits the surface of the planet. The planet does not have an atmosphere. What is the weight of the rock on the surface of the planet? A 1.6 N B 390 N C 1.6 kN D 64 kN

Accepted Answer

C

Question 18

18 A metal wire is stretched. The wire obeys Hooke’s law. Which quantity has a value that does not change? A extension B strain C stress D Young modulus

Accepted Answer

D

Question 19

19 An object is stretched until it reaches the elastic limit. Which statement must describe the stress on the object when it is at the elastic limit? A It is the maximum stress for which the object obeys Hooke’s law. B It is the maximum stress that can be applied to the object before it has elastic deformation. C It is the maximum stress that can be applied to the object before it has plastic deformation. D It is the maximum stress the object can withstand before it breaks.

Accepted Answer

C

Question 20

20 Which statement about progressive waves is correct? A They are always transverse waves. B They can exist in solids but not liquids. C They decrease in frequency as their speed increases. D They transfer energy away from their source.

Accepted Answer

D

Question 21

21 A cathode-ray oscilloscope (CRO) is used to determine the frequency of a sound wave. The diagram shows the waveform on the screen. The time-base setting is 5.0 ms div–1. What is the best estimate of the frequency of the sound wave? A 50 Hz B 71 Hz C 100 Hz D 143 Hz

Accepted Answer

B

Question 22

22 The warning signal on an ambulance has a frequency of 600 Hz. The speed of sound is 330 m s–1. The ambulance is travelling with a constant velocity of 25 m s–1 towards an observer. The ambulance passes, and then moves away from the observer with no change in velocity. initial position final position of ambulance of ambulance observer Which overall change in observed frequency takes place between the times at which the ambulance is a long way behind the observer and when it is a long way in front of the observer? A 49 Hz B 84 Hz C 91 Hz D 98 Hz

Accepted Answer

C

Question 23

23 Brief pulses of red, blue and green light are emitted from the Sun at the same time. The pulses travel the same distance to reach Mars. Assume that the pulses travel in a vacuum for the full duration of their journey. In which order would these pulses of light arrive at Mars? A all arrive at the same time B blue first, then green, then red C red first, then blue, then green D red first, then green, then blue

Accepted Answer

A

Question 24

24 Two coherent progressive waves from different sources meet at a point. Which condition must be satisfied for there to be zero resultant amplitude at the point where the waves meet? A The two waves must be emitted from their sources with the same intensity. B The two waves must be in phase with each other at the point. C The two waves must be travelling in opposite directions. D The two waves must have the same amplitude at the point.

Accepted Answer

D

Question 25

25 A corridor is 13.2 m long and has closed doors that reflect sound at both ends. The speed of sound in the air in the corridor is 330 m s–1. 13.2 m closed door closed door wall position of node What is the lowest frequency of sound that could create a stationary wave in the corridor with a node halfway along it? A 0.040 Hz B 13 Hz C 25 Hz D 50 Hz

Accepted Answer

C

Question 26

26 Water waves of wavelength  are formed in a ripple tank. The waves are diffracted as they pass through a narrow gap of width d (d is greater than ). Which gap width and which wavelength will cause the largest decrease in the amount of diffraction? gap width wavelength A 1 d 1  2 2 B 1 d 2 2 C 2d 1  2 D 2d 2

Accepted Answer

C

Question 27

27 Two loudspeakers X and Y emit sound waves that are in phase and of wavelength 0.75 m. An observer O is able to stand anywhere on a straight line that passes through X and Y, as shown. The observer stands at a point where the sound waves from X and Y meet in phase. O X Y What could be the distances OY and XY? distance OY / m distance XY / m A 1.25 3.50 B 2.00 2.75 C 2.75 2.00 D 3.25 1.50

Accepted Answer

D

Question 28

28 Light of a single wavelength is incident normally on a diffraction grating. The resulting diffraction pattern is displayed on a screen. Which change makes the first orders of intensity maxima further apart from each other on the screen? A placing the screen closer to the diffraction grating B using a diffraction grating with less separation between adjacent slits C using a diffraction grating with more slits but keeping the same separation between adjacent slits D using light with a shorter wavelength

Accepted Answer

B

Question 29

29 For a current-carrying wire, the current can be calculated using the equation shown. I = Anvq What is the meaning of n? A the number of charge carriers in the wire B the number of charge carriers multiplied by the volume of the wire C the number of charge carriers per unit length of the wire D the number of charge carriers per unit volume of the wire

Accepted Answer

D

Question 30

30 The number of free electrons passing a point in a wire in 24 hours is 6.0  1023. What is the average current in the wire? A 6.3 pA B 1.1 A C 67 A D 4.0 kA

Accepted Answer

B

Question 31

31 In the circuit shown, lamp P is rated 250 V, 50 W and lamp Q is rated 250 V, 200 W. The two lamps are connected in series to a 250 V power supply. 250 V P Q Assume that the resistance of each lamp remains constant. Which statement most accurately describes what happens when the switch is closed? A Lamp P emits four times as much power as lamp Q. B Lamp P emits twice as much power as lamp Q. C Lamp Q emits four times as much power as lamp P. D Lamp Q emits twice as much power as lamp P.

Accepted Answer

A

Question 32

32 A piece of wire has a length of 0.80 m and a diameter of 5.0  10–4 m. The I–V characteristic of the wire is shown. 5.0 I / A 2.5 0 0 5 10 V / V What is the resistivity of the metal from which the wire is made? A 1.2  10–7  m B 1.6  10–7  m C 4.9  10–7  m D 2.0  10–6  m

Accepted Answer

C

Question 33

33 Ten cells, each of electromotive force (e.m.f.) 1.5 V, are connected together, as shown. X Y What is the combined e.m.f. between terminals X and Y? A 8 V B 9 V C 12 V D 15 V

Accepted Answer

C

Question 34

34 A cell of electromotive force (e.m.f.) E and internal resistance r is connected to a variable resistor, as shown. E r v V The resistance of the variable resistor is gradually increased from r to 3r. Which graph shows the variation of the potential difference (p.d.) v across the internal resistance with the p.d. V across the variable resistor? A B 1.0E 1.0E v v 0.5E 0.5E 0 0 0 0.5E 1.0E 0 0.5E 1.0E V V C D 1.0E 1.0E v v 0.5E 0.5E 0 0 0 0.5E 1.0E 0 0.5E 1.0E V V

Accepted Answer

A

Question 35

35 Each of Kirchhoff’s two laws presumes that some quantity is conserved. Which row states Kirchhoff’s first law and names the quantity that is conserved? statement quantity A the algebraic sum of currents charge into a junction is zero B the algebraic sum of currents energy into a junction is zero C the e.m.f. in a loop is equal to the charge algebraic sum of the product of current and resistance round the loop D the e.m.f. in a loop is equal to the energy algebraic sum of the product of current and resistance round the loop

Accepted Answer

A

Question 36

36 Acell has an electromotive force (e.m.f.) of 8.0 V and negligible internal resistance. The cell forms
part of a circuit, as shown.

8.0V

The reading V; is 4.0V and the reading V2 is also 4.0V.
What is the resistance of resistor R?

A 0.509 B 2.0Q C 4.00 D 8.0Q

Accepted Answer

B

Question 37

37 In the circuit shown, the cells have negligible internal resistance and the reading on the
galvanometer is zero.

4.0V

9.0V

What is the value of resistor R?

A 2.00 B 6.0Q C 120 D 18Q

Accepted Answer

C

Question 38

38 When -particles are directed at gold leaf: 1 almost all -particles pass through without deflection 2 a few -particles are deviated through large angles. What are the reasons for these effects? 1 2 A most -particles have enough energy gold is very dense so a few low to pass right through the gold leaf energy -particles bounce back from the gold surface B most -particles miss all gold atoms a few -particles bounce off gold atoms C the gold nucleus is very small occasionally the path of an so most -particles miss all nuclei -particle is close to a nucleus D the positive charge in an occasionally an -particle atom is not concentrated experiences many small enough to deflect an -particle deflections in the same direction

Accepted Answer

C

Question 39

39 A nucleus X is radioactive and decays into a nucleus Y. X and Y are isotopes of the same element. Which combination of particles could have been emitted during the decay process? A 1 -particle and 1 – particle B 1 -particle and 2 – particles C 2 -particles and 1 – particle D 2 -particles and 2 – particles

Accepted Answer

B

Question 40

40 A positively charged meson consists of a quark and an antiquark. What could be the quark and antiquark? A charm and antiup B down and antitop C strange and antibottom D up and antistrange

Accepted Answer

D

Question paper16 pages

Mark scheme3 pages

Questions as text

Q1 · What could not be a measurement of a physical quantity?

Q2 · A computer memory stick is labelled as having a storage capacity of 128 GB

Q3 · A man of mass 75.2 kg uses a set of weighing scales to measure his mass three times

Q4 · Which statement about scalar and vector quantities is correct?

Q5 · How can the acceleration of an object be determined?

Q6 · A sprinter takes a time of 11.0 s to run a 100 m race

Q7 · A single horizontal force F is applied to a block X which is in contact with a separate…

Q8 · A car of mass 750 kg has a horizontal driving force of 2.0 kN acting on it

Q9 · An object falls freely from rest in a vacuum

Q10 · A rock of mass 2m, travelling in deep space at velocity v, explodes into two parts of…

Q11 · A horizontal metal bar PQ of length 50.0 cm is hinged at end P

Q12 · A cube WXZY has sides of length 2.0 cm and mass 24.0 g

Q13 · A rigid sphere is held at rest on the sea bed

Q14 · What is a unit for density?

Q15 · The total energy input Ein in a process is partly transferred to useful energy output U…

Q16 · An escalator is 60 m long and lifts passengers through a vertical height of 30 m, as shown

Q17 · A rock of mass 40 kg is released from rest from a height of 20 m above the surface of a…

Q18 · A metal wire is stretched

Q19 · An object is stretched until it reaches the elastic limit

Q20 · Which statement about progressive waves is correct?

Q21 · A cathode-ray oscilloscope (CRO) is used to determine the frequency of a sound wave

Q22 · The warning signal on an ambulance has a frequency of 600 Hz

Q23 · Brief pulses of red, blue and green light are emitted from the Sun at the same time

Q24 · Two coherent progressive waves from different sources meet at a point

Q25 · A corridor is 13.2 m long and has closed doors that reflect sound at both ends

Q26 · Water waves of wavelength  are formed in a ripple tank

Q27 · Two loudspeakers X and Y emit sound waves that are in phase and of wavelength 0.75 m

Q28 · Light of a single wavelength is incident normally on a diffraction grating

Q29 · For a current-carrying wire, the current can be calculated using the equation shown

Q30 · The number of free electrons passing a point in a wire in 24 hours is 6.0  1023

Q31 · In the circuit shown, lamp P is rated 250 V, 50 W and lamp Q is rated 250 V, 200 W

Q32 · A piece of wire has a length of 0.80 m and a diameter of 5.0  10–4 m

Q33 · Ten cells, each of electromotive force (e.m.f.) 1.5 V, are connected together, as shown

Q34 · A cell of electromotive force (e.m.f.) E and internal resistance r is connected to a…

Q35 · Each of Kirchhoff’s two laws presumes that some quantity is conserved

Q36 · Acell has an electromotive force (e.m.f.) of 8.0 V and negligible internal resistance

Q37 · In the circuit shown, the cells have negligible internal resistance and the reading on…

Q38 · When -particles are directed at gold leaf: 1 almost all -particles pass through without…

Q39 · A nucleus X is radioactive and decays into a nucleus Y

Q40 · A positively charged meson consists of a quark and an antiquark

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