Cambridge A Level Physics 9702 — 2009 May/June Paper 1 · Variant 1

1 Which statement, involving multiples and sub-multiples of the base unit metre (m), is correct? A 1 pm = 10–9 m B 1 nm = 10–6 m C 1 mm = 106 µm D 1 km = 106 mm

Mark scheme: D

More questions on SI units

2 The diagram shows a resultant force and its horizontal and vertical components. vertical component resultant θ horizontal component The horizontal component is 20.0 N and θ = 30°. What is the vertical component? A 8.7 N B 10.0 N C 11.5 N D 17.3 N Space for working

Mark scheme: C

More questions on Scalars and vectors

3 The diagram shows the stem of a Celsius thermometer marked to show initial and final temperature values. initial final temperature temperature –10 –5 0 +5 +10 +15 What is the temperature change expressed to an appropriate number of significant figures? A 14 °C B 20.5 °C C 21 °C D 22.0 °C

Mark scheme: B

More questions on Errors and uncertainties

4 The diagrams show digital voltmeter and analogue ammeter readings from a circuit in which electrical heating is occurring. 0.4 0.6 0.2 0.8 mV A 0 1.0 What is the electrical power of the heater? A 0.53 W B 0.58 W C 530 W D 580 W Space for working

Mark scheme: B

More questions on Potential difference and power

5 Which displacement-time graph best represents the motion of a falling sphere, the initial acceleration of which eventually reduces until it begins to travel at constant terminal velocity? A B displacement displacement 00 00 time time C D displacement displacement 00 00 time time Space for working

Mark scheme: D

More questions on Equations of motion

6 When a car driver sees a hazard ahead, she applies the brakes as soon as she can and brings the car to rest. The graph shows how the speed v of the car varies with time t after she sees the hazard. v 0 0 t1 t2 t Which graph represents the variation with time t of the distance s travelled by the car after she has seen the hazard? A B s s 0 0 0 t1 t2 t 0 t1 t2 t C D s s 0 0 0 t1 t2 t 0 t1 t2 t Space for working

Mark scheme: C

More questions on Equations of motion

7 Which statement about Newton’s laws of motion is correct? A The first law follows from the second law. B The third law follows from the second law. C Conservation of energy is a consequence of the third law. D Conservation of linear momentum is a consequence of the first law.

Mark scheme: A

More questions on Momentum and Newton’s laws of motion

8 The diagram shows the path of a golf ball. Which row describes changes in the horizontal and vertical components of the golf ball’s velocity, when air resistance forces are ignored? horizontal vertical A constant deceleration constant acceleration downwards B constant deceleration acceleration decreases upwards then increases downwards C constant velocity constant acceleration downwards D constant velocity acceleration decreases upwards then increases downwards Space for working

Mark scheme: C

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9 A tennis ball of mass 100 g is struck by a tennis racket. The velocity of the ball is changed as shown. 20 m s–1 30 m s–1 What is the magnitude of the change in momentum of the ball? A 1 kg m s–1 B 5 kg m s–1 C 1000 kg m s–1 D 5000 kg m s–1

Mark scheme: B

More questions on Linear momentum and its conservation

10 A stationary body explodes into two components of masses m and 2m. The components gain kinetic energies X and Y respectively. m 2m direction m moves direction 2m moves with kinetic energy X with kinetic energy Y X What is the value of the ratio ? Y 1 1 2 4 A B C D 4 2 1 1 Space for working

Mark scheme: C

More questions on Linear momentum and its conservation

11 The diagram represents a sphere under water. P, Q, R, and S are forces acting on the sphere, due to the pressure of the water. water surface P S Q R Each force acts perpendicularly to the sphere’s surface. P and R act in opposite directions vertically. Q and S act in opposite directions horizontally. Which information about the magnitudes of the forces is correct? A P < R ; S = Q B P > R ; S = Q C P = R ; S = Q D P = R = S = Q Space for working

Mark scheme: A

More questions on Density and pressure

12 An object, made from two equal masses joined by a light rod, falls with uniform speed through air. The rod remains horizontal. Which statement about the equilibrium of the system is correct? A It is not in equilibrium because it is falling steadily. B It is not in equilibrium because it is in motion. C It is not in equilibrium because there is a resultant torque. D It is in equilibrium because there is no resultant force and no resultant torque.

Mark scheme: D

More questions on Equilibrium of forces

13 A spindle is attached at one end to the centre of a lever 1.20 m long and at its other end to the centre of a disc of radius 0.20 m. A cord is wrapped round the disc, passes over a pulley and is attached to a 900 N weight. 1.20 m F F spindle 0.20 m lever disc pulley cord 900 N What is the minimum force F, applied to each end of the lever, that could lift the weight? A 75 N B 150 N C 300 N D 950 N Space for working

Mark scheme: B

More questions on Turning effects of forces

14 The forward motion of a motor-boat is opposed by forces F which vary with the boat’s speed v in accordance with the relation F = k v 2, where k is a constant. The effective power of the propellers required to maintain the speed v is P. Which expression relates k, P and v ? P P P P A k = v B k = C k = D k = v 2 v 3 v 4

Mark scheme: C

More questions on Energy conservation

15 The diagram shows two identical vessels X and Y connected by a short pipe with a tap. X Y h m Initially, X is filled with water of mass m to a depth h, and Y is empty. When the tap is opened, water flows from X to Y until the depths of water in both vessels are equal. How much potential energy is lost by the water during this process? (g = acceleration of free fall) mgh mgh A 0 B C D mgh 4 2 Space for working

Mark scheme: B

More questions on Gravitational potential energy and kinetic energy

16 Which row best describes how the molecules move in solids, in liquids and in gases? solids liquids gases A fixed in position only vibrate move about freely B slowly in all directions quickly in all directions very quickly in all directions C vibrate about mean position vibrate and move about move about freely D vibrate in one direction only vibrate in two directions vibrate in all three directions

Mark scheme: C

More questions on Kinetic theory of gases

17 Water can exist in three states: solid, liquid or vapour. Transitions between these states can involve melting, freezing, evaporation or boiling. Under conditions of constant pressure, which transition can occur over a range of temperatures rather than at one fixed temperature? A boiling B evaporation C freezing D melting Space for working

Mark scheme: B

More questions on Specific heat capacity and specific latent heat

18 The diagram shows a flask connected to a U-tube containing liquid. The flask contains air at atmospheric pressure. air liquid heat The flask is now gently heated and the liquid level in the right-hand side of the U-tube rises through a distance h. The density of the liquid is ρ. What is the increase in pressure of the heated air in the flask? A hρ B 1 hρg C hρg D 2hρg 2

Mark scheme: D

More questions on Density and pressure

19 Four materials are formed into rods of the same dimensions. At room temperature, which can sustain the largest plastic deformation? A the ductile material aluminium B the brittle material carbon C the brittle material glass D the ductile material steel Space for working A

Mark scheme: A

More questions on Elastic and plastic behaviour

20 Two steel wires P and Q have lengths l and 2l respectively, and cross-sectional areas A and 2 respectively. Both wires obey Hooke’s law. tension in P What is the ratio when both wires are stretched to the same extension? tension in Q 1 1 2 4 A B C D 4 2 1 1

Mark scheme: D

More questions on Stress and strain

21 A rubber band is stretched by hanging weights on it and the force-extension graph is plotted from the results. 20 force / N 15 10 5 0 0 10 20 30 extension / cm What is the best estimate of the strain energy stored in the rubber band when it is extended 30 cm? A 2.0 J B 2.6 J C 5.1 J D 200 J Space for working

Mark scheme: A

More questions on Elastic and plastic behaviour

22 Diffraction is the name given to the A addition of two coherent waves to produce a stationary wave pattern. B bending of waves round an obstacle. C change of direction when waves cross the boundary between one medium and another. D splitting of white light into colours.

Mark scheme: B

More questions on Diffraction

23 Which wave properties change when light passes from air into glass? A colour and speed B frequency and wavelength C speed and wavelength D wavelength and colour

Mark scheme: C

More questions on Progressive waves

24 The diagram represents the pattern of stationary waves formed by the superposition of sound waves from a loudspeaker and their reflection from a metal sheet (not shown). W X Y Z W, X, Y and Z are four points on the line through the centre of these waves. Which statement about these stationary waves is correct? A An antinode is formed at the surface of the metal sheet. B A node is a quarter of a wavelength from an adjacent antinode. C The oscillations at X are in phase with those at Y. D The stationary waves oscillate at right angles to the line WZ. Space for working

Mark scheme: B

More questions on Stationary waves

25 A diffraction grating with N lines per metre is used to deflect light of various wavelengths λ. The diagram shows a relation between the deflection angles θ for different values of λ in the n th order interference pattern. sin θ 00 λ What is the gradient of the graph? N n 1 A Nn B C D n N Nn

Mark scheme: A

More questions on The diffraction grating

26 A stationary wave of frequency 80.0 Hz is set up on a stretched string of length 210 cm. 210 cm What is the speed of the waves that produce this stationary wave? A 56.0 m s–1 B 112 m s–1 C 5600 m s–1 D 11 200 m s–1 Space for working

Mark scheme: B

More questions on Stationary waves

27 The diagram shows the paths of two charged particles, X and Y, during their passage between a pair of oppositely charged metal plates, P and Q. P X Y Q The plates are charged such that the electric field between them is directed from Q to P. Which charges on X and Y will produce the observed paths? X Y A – – B – + C + – D + +

Mark scheme: A

More questions on Uniform electric fields

28 There is a potential difference between a pair of parallel plates. Which values of potential difference and separation of the plates will produce an electric field strength of the greatest value? potential separation difference A 2V 2d d B 2V 2 V C 2 2d V d D 2 2 Space for working

Mark scheme: B

More questions on Uniform electric fields

29 The diagram shows an electron, with charge e, mass m, and velocity v, entering a uniform electric field of strength E. electron v E x The direction of the field and the electron’s motion are both horizontal and to the right. Which expression gives the distance x through which the electron travels before it stops momentarily? mv mv mv 2 mv 2 A x = E B x = Ee C x = D x = 2 E 2 Ee

Mark scheme: D

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30 Which amount of charge, flowing in the given time, will produce the largest current? charge / C time / s A 4 1 4 B 4 1 C 1 4 D 1 4 4 Space for working

Mark scheme: A

More questions on Electric current

31 A 12 V battery is charged for 20 minutes by connecting it to a source of electromotive force (e.m.f.). The battery is supplied with 7.2 × 104 J of energy in this time. How much charge flows into the battery? A 5.0 C B 60 C C 100 C D 6000 C

Mark scheme: D

More questions on Potential difference and power

32 What is meant by the electromotive force (e.m.f.) of a cell? A The e.m.f. of a cell is the energy converted into electrical energy when unit charge passes through the cell. B The e.m.f. of a cell is the energy transferred by the cell in driving unit charge through the external resistance. C The e.m.f. of a cell is the energy transferred by the cell in driving unit charge through the internal resistance of the cell. D The e.m.f. of a cell is the amount of energy needed to bring a unit positive charge from infinity to its positive pole.

Mark scheme: A

More questions on Practical circuits

33 Two cells of e.m.f. 3.0 V and 1.2 V and negligible internal resistance are connected to resistors of resistance 9.0 Ω and 18 Ω as shown. 3.0 V 1.2 V I 9.0 Ω 18 Ω What is the value of the current I in the 9.0 Ω resistor? A 0.10 A B 0.20 A C 0.30 A D 0.47 A Space for working

Mark scheme: B

More questions on Kirchhoff’s laws

34 Six identical 12 Ω resistors are arranged in two groups, one with three in series and the other with three in parallel. 12 Ω 12 Ω 12 Ω 12 Ω 12 Ω 12 Ω series parallel What are the combined resistances of each of these two arrangements? series parallel A 4.0 Ω 0.25 Ω B 4.0 Ω 36 Ω C 36 Ω 0.25 Ω D 36 Ω 4.0 Ω Space for working

Mark scheme: D

More questions on Resistance and resistivity

35 The diagrams show a light-dependent resistor in circuit P, and a thermistor in circuit Q. circuit P circuit Q How does the potential difference across the fixed resistor in each circuit change when both the brightness of the light on the light-dependent resistor and the temperature of the thermistor are increased? circuit P circuit Q A decrease decrease B decrease increase C increase decrease D increase increase

Mark scheme: D

More questions on Potential dividers

36 How do the nucleon (mass) number and proton (atomic) number of two isotopes of an element compare? nucleon number proton number A different different B different same C same different D same same Space for working

Mark scheme: B

More questions on Atoms, nuclei and radiation

37 Nuclear decay is both spontaneous and random. When the count rate of a radioactive isotope is measured, the readings fluctuate. Which row describes what the fluctuations demonstrate? spontaneous random nature nature A no no B no yes C yes no D yes yes

Mark scheme: B

More questions on Radioactive decay

38 Which two nuclei contain the same number of neutrons? A 12 C and 14 C 6 6 B 16 N and 15 O 7 8 C 23 Na and 24 Mg 11 12 D 32 Si and 32 P 14 15 Space for working

Mark scheme: C

More questions on Atoms, nuclei and radiation

39 The calcium nuclide 42 Ca is formed by beta decay. 20 What are the nucleon (mass) number and proton (atomic) number of the unstable nuclide that underwent beta decay to form the calcium nuclide? nucleon number proton number A 41 19 B 41 21 C 42 19 D 42 21

Mark scheme: C

More questions on Radioactive decay

40 When boron-11 ( 11 5B ) is bombarded with α-particles, a new nucleus is formed and a neutron is released. Which nuclear equation could represent this reaction? A 11 5B + 1 1He → 11 6C + 1 0n B 11 5B + 2 2He → 12 7N + 1 0n C 11 5B + 4 2He → 14 6C + 1 1n D 11 5B + 4 2He → 14 7N + 1 0n Space for working

Mark scheme: D

More questions on Mass defect and nuclear binding energy