Cambridge A Level Physics 9702 — 2024 Oct/Nov Paper 1 · Variant 1

Question 1

1 What are the SI base units for the moment of a force? A kg m–1 s2 B kg s–2 C kg m s–2 D kg m2 s–2

Accepted Answer

D

Question 2

2 Which statement about vector quantities is correct? A Acceleration of free fall is a vector quantity because it has a constant magnitude. B Temperature in C is a vector quantity because it can be positive or negative. C Time is a vector quantity because it can only go in the forwards direction. D Weight is a vector quantity because it has a direction.

Accepted Answer

D

Question 3

3 The density of the material of a rectangular block is determined by measuring the mass and linear dimensions of the block. The list shows the results obtained, together with their uncertainties. mass = (25.0  0.1) g length = (5.00  0.01) cm width = (2.00  0.01) cm height = (1.00  0.01) cm The density is calculated to be 2.50 g cm–3. What is the uncertainty in this result? A  0.01 g cm–3 B  0.02 g cm–3 C  0.05 g cm–3 D  0.13 g cm–3

Accepted Answer

C

Question 4

4 What is a reasonable estimate of the volume of one page from this examination paper? A 60 mm3 B 600 mm3 C 6000 mm3 D 60 000 mm3

Accepted Answer

C

Question 5

5 An object is projected from horizontal ground at a velocity of magnitude u and angle @ to the
horizontal. It hits the ground at a time ¢ after it is projected. Assume air resistance is negligible.

Uu

Which statement does not describe the motion of this object?

A
B

The horizontal component of the object’s velocity is constant and has the value ucos@.

The horizontal distance travelled by the object is tucos@.

The time taken for the object to reach maximum height is - ;

The vertical component of the object’s velocity is constant and has the value usind.

Accepted Answer

D

Question 6

6 A person, travelling on a motorway a total distance of 200 km, travels the first 90 km at an average speed of 80 km h–1. Which average speed must be obtained for the rest of the journey if the person is to reach the destination in a total time of 2 hours 0 minutes? A 110 km h–1 B 120 km h–1 C 122 km h–1 D 126 km h–1

Accepted Answer

D

Question 7

7 A car of mass 1200 kg has momentum 18 000 kg m s–1. What is the kinetic energy of the car? A 4.65 kJ B 6.57 kJ C 135 kJ D 270 kJ

Accepted Answer

C

Question 8

8 A ladder is positioned on icy (frictionless) ground and is leant against a rough wall. At the instant of release it begins to slide. Which diagram shows the directions of the forces P, W and R acting on the ladder as it slides? A B P P ladder ladder wall wall R R W W ground ground C D P P ladder ladder wall wall R R W W ground ground

Accepted Answer

B

Question 9

9 A toy parachute is dropped from a bridge and falls vertically through the air. The graph shows the distance travelled by the parachute against time. Which region of the graph shows when the parachute is at terminal velocity? 9 C C D D distance 8 travelled 7 / m 6 B 5 4 3 2 1 A 0 0 0.5 1 1.5 2 2.5 3 time / s

Accepted Answer

B

Question 10

10 A lift (elevator) consists of a passenger car supported by a cable that runs over a light, frictionless pulley to a counterbalance. The counterbalance falls as the passenger car rises. pulley not to scale counterbalance passenger car Some masses are shown in the table. mass / kg passenger car 520 counterbalance 640 passenger 80 What is the magnitude of the acceleration of the car when carrying just one passenger and when the pulley is free to rotate? A 0.032 m s–2 B 0.32 m s–2 C 0.61 m s–2 D 0.65 m s–2

Accepted Answer

B

Question 11

11 A stationary ball of mass m is hit by a bat. The ball leaves the bat with velocity v. The bat is in contact with the ball for a short time t. What is the average force of the bat on the ball? mv 1 mv 2 A mvt B C 1 mv  2 t D 2  t 2  t

Accepted Answer

B

Question 12

12 A disc of mass M is moving across a horizontal frictionless surface with constant velocity u. It

collides with a stationary disc of mass 4M.

The diagram shows the view from above of the motion
collision.

before collision

What is the initial velocity u of the disc of mass M?

A 1.1ms7 B 1.4ms" C 3.5ms"

of the two discs before and after the

after collision

Accepted Answer

D

Question 13

13 An object is dropped from rest on the Earth from a height of 2.0 m. The same object is dropped from rest on the Moon from twice the height. The acceleration of free fall on the Moon is approximately 16% of the value on the Earth. Assume that there are no resistive forces acting on the object. speed of the object just before hitting the surface on the Earth What is the ratio ? speed of the object just before hitting the surface on the Moon A 1.8 B 2.5 C 3.1 D 3.5

Accepted Answer

A

Question 14

14 The graph shows how velocity v varies with time t for a bungee jumper. Q v P R 0 0 t At which point is the bungee jumper momentarily at rest and at which point does she have zero acceleration? jumper with zero jumper at rest acceleration A Q P B Q R C R Q D R R

Accepted Answer

C

Question 15

15 A solid sphere, which is less dense than water, is held completely immersed in water a few metres below the surface. The density of the water is uniform. The sphere is released. Immediately after release, the sphere rises. Which row describes the changes in the magnitudes of the upthrust on the sphere and the resultant force on the sphere as it rises? upthrust on resultant force the sphere on the sphere A constant decreasing B constant increasing C decreasing decreasing D decreasing increasing

Accepted Answer

A

Question 16

16 A uniform bar of weight 200N and length 4.0m is freely hinged on a wall at one end. The bar is
horizontal and is held in equilibrium by a cable attached at a distance of 0.50m from the other
end. The cable is at an angle of 35° to the horizontal.

wall

'(0.50m

_—$ @ i —_—\—o@°$ >——_—

What is the tension T in the cable?

A 140N B 170N C 200N D 400N

Accepted Answer

C

Question 17

17 The diagrams all show a pair of equal forces acting on a metre rule. Which diagram shows forces that provide a couple and zero resultant force? A B C D

Accepted Answer

B

Question 18

18 A ball of mass m is thrown up to height h in air with an initial velocity v, as shown. v h P Q Air resistance is negligible. The acceleration of free fall is g. What is the total work done by the gravitational force on the ball during its flight from P to Q? A zero B 1 mv 2 C mgh D 2mgh 2

Accepted Answer

A

Question 19

19 A spring of spring constant 30 N m–1 is suspended vertically from its top. The spring obeys Hooke’s law. Initially the spring is not compressed and not stretched. A mass of 0.50 kg is attached to the bottom of the spring. The mass is released from rest and falls. Frictional effects are negligible. In the motion that follows, what is the maximum extension of the spring? A 0.017 m B 0.033 m C 0.16 m D 0.33 m

Accepted Answer

D

Question 20

20 A wire has original length L and cross-sectional area A. A tensile force F is applied to the wire which causes it to have extension x. The wire obeys Hooke’s law. What is an expression for the Young modulus of the material from which the wire is made? stress  x F F  x strain A B C D stress L A  strain A  L

Accepted Answer

B

Question 21

21 A wire is stretched by a gradually increasing force. The force–extension graph for the wire is shown. S R force Q P 0 0 extension Which statement must be correct? A Point Q is the elastic limit. B Point R is the limit of proportionality. C The area under the graph from P to S is the elastic potential energy stored in the wire. D The area under the graph from P to S is the work done in stretching the wire.

Accepted Answer

D

Question 22

22 A spring has an unstretched length of 0.30 m and a spring constant of 400 N m−1. An object is suspended from the spring and the spring is deformed within its limit of proportionality. The new length of the spring is 0.50 m. What is the elastic potential energy stored in the spring? A 8.0 J B 16 J C 40 J D 50 J

Accepted Answer

A

Question 23

23 A wire consists of a 3.0 m length of metal X joined to a 1.0 m length of metal Y. The cross-sectional area of the wire is uniform. X 3.0 m Y 1.0 m load A load hung from the wire causes metal X to extend by 1.5 mm and metal Y to extend by 1.0 mm. The same load is then hung from a second wire of the same cross-sectional area, consisting of a 1.0 m length of metal X and a 3.0 m length of metal Y. Both wires are extended within their limit of proportionality. What is the total extension of this second wire? A 2.5 mm B 3.5 mm C 4.8 mm D 5.0 mm

Accepted Answer

B

Question 24

24 The graph shows the variation of the displacement with distance for a progressive wave at one instant in time. displacement 0 0 1.0 2.0 3.0 4.0 5.0 6.0 distance / cm The period of the wave is 91 ms. What can be determined about the wave? A It has a velocity of 0.44 m s–1 and a frequency of 11 Hz. B It has a velocity of 0.55 m s–1 and a wavelength of 5.0 cm. C It is longitudinal and has a frequency of 11 Hz. D It is transverse and has a wavelength of 4.0 cm.

Accepted Answer

A

Question 25

25 Which group of electromagnetic waves is arranged in order from shortest wavelength to longest wavelength? A radio waves  visible light  gamma rays B visible light  microwaves  infrared C visible light  ultraviolet  X-rays D X-rays  infrared  microwaves

Accepted Answer

D

Question 26

26 A wave has a frequency of 5 GHz. What is the period of the wave? A 200 ps B 2 ns C 20 ns D 20 000 s

Accepted Answer

A

Question 27

27 Three statements about two progressive waves are listed. 1 The waves have the same frequency. 2 The waves have the same amplitude. 3 The waves are emitted with a constant phase difference. Which statements must be correct for the two waves to be coherent? A 1, 2 and 3 B 1 and 2 only C 1 and 3 only D 2 and 3 only

Accepted Answer

C

Question 28

28 Waves P and Q have the same amplitude. The waves meet in phase at point X and interfere to give a resultant wave with intensity I. The amplitude of wave P is doubled. What is the new intensity of the resultant wave at X, in terms of I ? A 0.44I B 1.5I C 2.3I D 3.0I

Accepted Answer

C

Question 29

29 Radio waves can be polarised, but sound waves cannot be polarised. Which statement gives the reason for this? A Radio waves are generally of a higher frequency than sound waves. B Radio waves are transverse waves, but sound waves are longitudinal waves. C Radio waves can travel through a vacuum, but sound waves cannot travel through a vacuum. D Radio waves travel at a much higher speed than sound waves.

Accepted Answer

B

Question 30

30 Light of wavelength  is incident normally on a diffraction grating with a total number of N lines in width w. A second order maximum is observed at an angle of diffraction . What is N ? w  2w  w sin  w sin  A B C D sin  sin  2  

Accepted Answer

C

Question 31

31 Kirchhoff’s second law is a consequence of a basic principle. What is this principle? A The charge flowing in an electric circuit is conserved. B The energy in an electric circuit is conserved. C The sum of the electric currents entering a point in an electric circuit is equal to the sum of the electric currents leaving that point. D The sum of the potential differences in an electric circuit is equal to the sum of the products of the current and resistance.

Accepted Answer

B

Question 32

32 The diagram shows a circuit with a light-dependent resistor (LDR).

6.0kQ

The ammeter reads zero current.

What is the resistance of the LDR?

A 6.0kQ B 18kQ C 26kQ D 30kQ

Accepted Answer

B

Question 33

33 A torch uses three lamps connected in parallel and is powered by a cell of electromotive force (e.m.f.) 3.0 V and negligible internal resistance. Each lamp dissipates 0.60 W of power. What is the current in the cell? A 0.067 A B 0.20 A C 0.60 A D 0.83 A

Accepted Answer

C

Question 34

34 A cell with internal resistance is connected to a light-dependent resistor (LDR), a fixed resistor and a voltmeter, as shown. V The voltmeter reading increases. Which quantity decreases as the voltmeter reading increases? A the charge moving through the cell per unit time B the energy transferred to the fixed resistor per unit charge C the intensity of the light incident on the LDR D the terminal potential difference across the cell

Accepted Answer

D

Question 35

35 The circuit shown contains a cell with negligible internal resistance. X The energy transferred per unit charge in driving charge around the complete circuit is E. The potential difference (p.d.) across X is V. The cell is then replaced with a different cell of the same electromotive force (e.m.f.) that has significant internal resistance. What is the effect on E and V of replacing the cell? effect on E effect on V A decreases decreases B decreases increases C no change decreases D no change increases

Accepted Answer

C

Question 36

36 In the circuits shown, the batteries are identical and all have negligible internal resistance. All of the resistors have the same resistance. The diodes have zero resistance when conducting and infinite resistance when not conducting. In which circuit is the current in the battery greatest? A B C D

Accepted Answer

A

Question 37

37 A potentiometer circuit is used to determine the electromotive force (e.m.f.) E of a cell. The circuit
includes a second cell of e.m.f. 1.5 V and internal resistance 0.50 that is connected to a uniform
resistance wire XY, as shown.

poo oe

bee e ee s

uniform resistance wire
length 0.96m
resistance 0.50Q

E

The resistance wire XY has a length of 0.96 m and a resistance of 0.500.

The movable connection Z is moved along wire XY. The galvanometer reading is zero when
length XZ is 0.64m.

What is the value of e.m.f. E?

A 0.50V B 0.75V C 1.0V D 1.1V

Accepted Answer

A

Question 38

38 Which particle is not a fundamental particle? A charm quark B electron C neutrino D neutron

Accepted Answer

D

Question 39

39 The isotope fluorine-18, 18 F, undergoes + decay to form a stable isotope. 9 How many neutrons are there in a nucleus of the stable isotope? A 7 B 8 C 9 D 10

Accepted Answer

D

Question 40

40 Which statement is correct? A A baryon is a hadron and consists of 2 quarks. B A meson is a hadron and consists of 3 quarks. C An electron is a fundamental particle and is a lepton. D A neutrino is a fundamental particle and is a hadron.

Accepted Answer

C

Question paper16 pages

Mark scheme3 pages

Questions as text

Q1 · What are the SI base units for the moment of a force?

Q2 · Which statement about vector quantities is correct?

Q3 · The density of the material of a rectangular block is determined by measuring the mass…

Q4 · What is a reasonable estimate of the volume of one page from this examination paper?

Q5 · An object is projected from horizontal ground at a velocity of magnitude u and angle @ to…

Q6 · A person, travelling on a motorway a total distance of 200 km, travels the first 90 km at…

Q7 · A car of mass 1200 kg has momentum 18 000 kg m s–1

Q8 · A ladder is positioned on icy (frictionless) ground and is leant against a rough wall

Q9 · A toy parachute is dropped from a bridge and falls vertically through the air

Q10 · A lift (elevator) consists of a passenger car supported by a cable that runs over a…

Q11 · A stationary ball of mass m is hit by a bat

Q12 · A disc of mass M is moving across a horizontal frictionless surface with constant…

Q13 · An object is dropped from rest on the Earth from a height of 2.0 m

Q14 · The graph shows how velocity v varies with time t for a bungee jumper

Q15 · A solid sphere, which is less dense than water, is held completely immersed in water a…

Q16 · A uniform bar of weight 200N and length 4.0m is freely hinged on a wall at one end

Q17 · The diagrams all show a pair of equal forces acting on a metre rule

Q18 · A ball of mass m is thrown up to height h in air with an initial velocity v, as shown

Q19 · A spring of spring constant 30 N m–1 is suspended vertically from its top

Q20 · A wire has original length L and cross-sectional area A

Q21 · A wire is stretched by a gradually increasing force

Q22 · A spring has an unstretched length of 0.30 m and a spring constant of 400 N m−1

Q23 · A wire consists of a 3.0 m length of metal X joined to a 1.0 m length of metal Y

Q24 · The graph shows the variation of the displacement with distance for a progressive wave at…

Q25 · Which group of electromagnetic waves is arranged in order from shortest wavelength to…

Q26 · A wave has a frequency of 5 GHz

Q27 · Three statements about two progressive waves are listed

Q28 · Waves P and Q have the same amplitude

Q29 · Radio waves can be polarised, but sound waves cannot be polarised

Q30 · Light of wavelength  is incident normally on a diffraction grating with a total number…

Q31 · Kirchhoff’s second law is a consequence of a basic principle

Q32 · The diagram shows a circuit with a light-dependent resistor (LDR)

Q33 · A torch uses three lamps connected in parallel and is powered by a cell of electromotive…

Q34 · A cell with internal resistance is connected to a light-dependent resistor (LDR), a fixed…

Q35 · The circuit shown contains a cell with negligible internal resistance

Q36 · In the circuits shown, the batteries are identical and all have negligible internal…

Q37 · A potentiometer circuit is used to determine the electromotive force (e.m.f.) E of a cell

Q38 · Which particle is not a fundamental particle?

Q39 · The isotope fluorine-18, 18 F, undergoes + decay to form a stable isotope

Q40 · Which statement is correct?

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