Cambridge A Level Physics 9702 — 2014 May/June Paper 1 · Variant 3
9702/13/M/J/14 · 40 questions · 40 marks · ≈45 min
The question paper and its mark scheme, free to read here and free to download. This is Cambridge’s own paper, exactly as it was sat.
Question paper24 pages
Mark scheme2 pages
Answers below. Sit the paper first if you are practising.
Questions as text
Q1 · Which quantity can be measured in electronvolts (eV)?
1 Which quantity can be measured in electronvolts (eV)? A electric charge B electric potential C energy D power
Mark scheme: C
Q2 · The unit of specific heat capacity is J kg–1 K–1
2 The unit of specific heat capacity is J kg–1 K–1. What is its equivalent in terms of SI base units? A kg–1 m2 K–1 B m s–1 K–1 C m s–2 K–1 D m2 s–2 K–1
Mark scheme: D
Q3 · What is the vertical component of this displacement vector?
3 What is the vertical component of this displacement vector? 5.0 km 37° horizontal A 3.0 km B 3.8 km C 4.0 km D 5.0 km Space for working
Mark scheme: A
Q4 · The resistance of a lamp is calculated from the value of the potential difference (p.d.)…
4 The resistance of a lamp is calculated from the value of the potential difference (p.d.) across it and the value of the current passing through it. Which statement correctly describes how to combine the uncertainties in the p.d. and in the current? A Add together the actual uncertainty in the p.d. and the actual uncertainty in the current. B Add together the percentage uncertainty in the p.d. and the percentage uncertainty in the current. C Subtract the actual uncertainty in the current from the actual uncertainty in the p.d. D Subtract the percentage uncertainty in the current from the percentage uncertainty in the p.d.
Mark scheme: B
Q5 · The display on a cathode-ray oscilloscope shows the signal produced by an electronic…
5 The display on a cathode-ray oscilloscope shows the signal produced by an electronic circuit. The time-base is set at 5.0 ns per division and the Y-gain at 10 V per division. What is the frequency of the signal? A 2.0 × 10–8 Hz B 2.5 × 10–2 Hz C 5.0 × 107 Hz D 3.1 × 108 Hz Space for working
Mark scheme: C
Q6 · A digital caliper is used to measure the 28.50 mm width of a plastic ruler
6 A digital caliper is used to measure the 28.50 mm width of a plastic ruler. The digital caliper reads to the nearest 0.01 mm. What is the correct way to record this reading? A 0.02850 ± 0.01 m B 0.0285 ± 0.001 m C (2.850 ± 0.001) × 10–2 m D (2.850 ± 0.001) × 10–3 m
Mark scheme: C
Q7 · An experiment is performed to measure the acceleration of free fall g
7 An experiment is performed to measure the acceleration of free fall g. A body falls between two fixed points. The four measurements shown below are taken. Which measurement is not required for the calculation of g ? A the distance fallen by the body B the initial velocity of the body C the mass of the body D the time taken for the body to fall
Mark scheme: C
Q8 · In a cathode-ray tube, an electron is accelerated uniformly in a straight line from a…
8 In a cathode-ray tube, an electron is accelerated uniformly in a straight line from a speed of 4 × 103 m s–1 to 2 × 107 m s–1 over a distance of 10 mm. What is the acceleration of the electron? A 2 × 103 m s–2 B 2 × 106 m s–2 C 2 × 1013 m s–2 D 2 × 1016 m s–2 Space for working
Mark scheme: D
Q9 · The graph shows how the speed v of a sprinter changes with time t during a 100 m race
9 The graph shows how the speed v of a sprinter changes with time t during a 100 m race. 12 v / m s–1 10 8 6 4 2 0 0 2 4 6 8 10 t / s What is the best estimate of the maximum acceleration of the sprinter? A 0.5 m s–2 B 1 m s–2 C 3 m s–2 D 10 m s–2
Mark scheme: C
Q10 · A tennis ball is dropped onto a table and bounces back up
10 A tennis ball is dropped onto a table and bounces back up. The table exerts a force F on the ball. Which graph best shows the variation with time t of the force F while the ball is in contact with the table? A B C D F F F F 00 00 00 00 t t t t Space for working
Mark scheme: C
Q11 · A resultant force of 10 N acts on a body for a time of 2.0 s
11 A resultant force of 10 N acts on a body for a time of 2.0 s. Which graph could show the variation with time t of the momentum p of the body? 20 p / kg m s–1 15 A 10 B C 5 D 0 0 1.0 2.0 t / s
Mark scheme: B
Q12 · A stationary body explodes into two components of masses m and 2m
12 A stationary body explodes into two components of masses m and 2m. The components gain kinetic energies X and Y respectively. m 2m moves with moves with kinetic energy X 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
Q13 · What is the condition for an object to be in equilibrium?
13 What is the condition for an object to be in equilibrium? A The object’s velocity and the resultant torque on it must both be zero. B The object’s velocity must be zero. C The resultant force and the resultant torque on the object must both be zero. D The resultant force on the object must be zero.
Mark scheme: C
Q14 · A uniform solid cuboid of concrete of dimensions 0.50 m × 1.20 m × 0.40 m and weight 4000…
14 A uniform solid cuboid of concrete of dimensions 0.50 m × 1.20 m × 0.40 m and weight 4000 N rests on a flat surface with the 1.20 m edge vertical as shown in diagram 1. 0.40 m 0.40 m 1.20 m 0.50 m 0.50 m 1.20 m diagram 1 diagram 2 What is the minimum energy required to roll the cuboid through 90° to the position shown in diagram 2 with the 0.50 m edge vertical? A 200 J B 400 J C 1400 J D 2600 J Space for working
Mark scheme: A
Q15 · A uniform beam is pivoted at P as shown
15 A uniform beam is pivoted at P as shown. Weights of 10 N and 20 N are attached to its ends. The length of the beam is marked at 0.1 m intervals. The weight of the beam is 100 N. At which point should a further weight of 20 N be attached to achieve equilibrium? 0.6 m 0.4 m 0.1 m A B C D P 10 N 20 N
Mark scheme: D
Q16 · An electric motor has an input power Pin, useful output power Pout and efficiency η
16 An electric motor has an input power Pin, useful output power Pout and efficiency η. input power electric motor output power Pin of efficiency η Pout power lost How much power is lost by the motor? 1 1 A ηPin B −1 Pin C ηPout D −1 Pout η η
Mark scheme: D
Q17 · A shot-put champion accelerates a 7.0 kg metal ball in a straight line
17 A shot-put champion accelerates a 7.0 kg metal ball in a straight line. The ball moves from rest to a speed of 12 m s–1 in a distance of 1.2 m. What is the average resultant force on the metal ball? A 70 N B 210 N C 420 N D 840 N Space for working
Mark scheme: C
Q18 · A ball drops onto a horizontal surface and bounces elastically
18 A ball drops onto a horizontal surface and bounces elastically. What happens to the kinetic energy of the ball during the very short time that it is in contact with the surface? A Most of the kinetic energy is lost as heat and sound energy. B The kinetic energy decreases to zero and then returns to its original value. C The kinetic energy remains constant because it is an elastic collision. D The kinetic energy remains constant in magnitude but changes direction.
Mark scheme: B
Q19 · When the water in a pond freezes, it changes from a liquid to a solid
19 When the water in a pond freezes, it changes from a liquid to a solid. When this occurs, it changes volume and exchanges energy with the surroundings. Which row is correct? change of volume energy exchange A contracts gives out energy to the surroundings B contracts takes in energy from the surroundings C expands gives out energy to the surroundings D expands takes in energy from the surroundings
Mark scheme: C
Q20 · Which process does not require energy to be supplied?
20 Which process does not require energy to be supplied? A boiling B evaporation C freezing D melting Space for working
Mark scheme: C
More questions on Specific heat capacity and specific latent heat
Q21 · The graph shows the distribution of speeds for the molecules of a gas at a particular…
21 The graph shows the distribution of speeds for the molecules of a gas at a particular temperature. the number of molecules with speed v 0 0 speed v Which statement is correct? A All the molecules have the same kinetic energy. B The commonest value of speed is also the average speed. C The graph shows that the molecules of a gas are widely spaced apart. D The peak value of the graph would move to the right if the temperature is increased.
Mark scheme: D
Q22 · The Mariana Trench in the Pacific Ocean has a depth of about 10 km
22 The Mariana Trench in the Pacific Ocean has a depth of about 10 km. Assuming that sea water is incompressible and has a density of about 1020 kg m–3, what would be the approximate pressure at that depth? A 105 Pa B 106 Pa C 107 Pa D 108 Pa
Mark scheme: D
Q23 · An elastic material with a Young modulus E is subjected to a tensile stress S
23 An elastic material with a Young modulus E is subjected to a tensile stress S. Hooke’s Law is obeyed. What is the expression for the elastic energy stored per unit volume of the material? S 2 S 2 E 2 E A B C D 2 E E 2 S 2 S 2 Space for working
Mark scheme: A
Q24 · Cylindrical samples of steel, glass and rubber are each subjected to a gradually…
24 Cylindrical samples of steel, glass and rubber are each subjected to a gradually increasing tensile force F. The extensions e are measured and graphs are plotted as shown below. F F F 00 e 00 e 00 e graph X graph Y graph Z Which row correctly relates the graphs to the materials? steel glass rubber A X Y Z B X Z Y C Y X Z D Y Z X
Mark scheme: D
Q25 · A cathode-ray oscilloscope (c.r.o.) displays a waveform corresponding to a sound wave
25 A cathode-ray oscilloscope (c.r.o.) displays a waveform corresponding to a sound wave. In order to determine the frequency of the sound wave, which part of the displayed waveform must be measured and which c.r.o. setting must be known? on-screen c.r.o. setting measurement A amplitude time-base B amplitude Y-gain C wavelength time-base D wavelength Y-gain Space for working
Mark scheme: C
Q26 · What is the approximate range of frequencies of infra-red radiation?
26 What is the approximate range of frequencies of infra-red radiation? A 1 × 103 Hz to 1 × 109 Hz B 1 × 109 Hz to 1 × 1011 Hz C 1 × 1011 Hz to 1 × 1014 Hz D 1 × 1014 Hz to 1 × 1017 Hz
Mark scheme: C
Q27 · A small source emits spherical waves
27 A small source emits spherical waves. P r source The wave intensity I at any point P, a distance r from the source, is inversely proportional to r 2. What is the relationship between the wave amplitude a and the distance r ? A a2 ∝ r 1 B a ∝ r 1 C a ∝ 1 D a ∝ 1 r r 2 4 Space for working
Mark scheme: B
Q28 · A student attempts to show the interference of light using two identical green LEDs
28 A student attempts to show the interference of light using two identical green LEDs. Which statement explains why the experiement will not succeed? A The light waves from the sources are not coherent. B The light waves from the sources do not have the same amplitude. C The light waves from the sources have a range of wavelengths. D The light waves from the sources are not monochromatic.
Mark scheme: A
Q29 · A stationary wave is set up on a stretched string, as shown
29 A stationary wave is set up on a stretched string, as shown. Q S P R Which statement about the points on the string is correct? A Point Q vibrates with the largest amplitude. B Points P and R vibrate in phase. C Point S is an antinode. D The horizontal distance between R and S is half the wavelength.
Mark scheme: B
Q30 · Monochromatic light is incident on a diffraction grating and a diffraction pattern is…
30 Monochromatic light is incident on a diffraction grating and a diffraction pattern is observed. Which line of the table gives the effect of replacing the grating with one that has more lines per metre? number of orders of angle between first and diffraction visible second orders of diffraction A decreases decreases B decreases increases C increases decreases D increases increases Space for working
Mark scheme: B
Q31 · An electron enters a region of space where there is a uniform electric field E as shown
31 An electron enters a region of space where there is a uniform electric field E as shown. path of E electron Initially, the electron is moving parallel to, and in the direction of, the electric field. What is the subsequent path and change of speed of the electron? path of electron speed of electron A linear decreases B linear increases C parabolic decreases D parabolic increases Space for working
Mark scheme: A
Q32 · Two parallel plates X and Y are separated by a distance d in a vacuum
32 Two parallel plates X and Y are separated by a distance d in a vacuum. There is a potential difference between the plates so that a uniform electric field is produced. plate X plate Y –q d A charge –q moves from rest from the surface of plate X and travels towards plate Y. When the charge reaches plate Y it has kinetic energy K. Which expression gives the electric field strength between the plates? q qd K Kd A B C D Kd K qd q Space for working
Mark scheme: C
Q33 · Two wires P and Q made of the same material and of the same length are connected in…
33 Two wires P and Q made of the same material and of the same length are connected in parallel to the same voltage supply. Wire P has diameter 2 mm and wire Q has diameter 1 mm. What is the ratio current in P ? current in Q 1 1 2 4 A B C D 4 2 1 1
Mark scheme: D
Q34 · A cell has an electromotive force (e.m.f.) of 6 V and internal resistance R
34 A cell has an electromotive force (e.m.f.) of 6 V and internal resistance R. An external resistor, also of resistance R, is connected across this cell, as shown. cell 6 V R R Power P is dissipated by the external resistor. The cell is replaced by a different cell that has an e.m.f. of 6 V and negligible internal resistance. What is the new power that is dissipated in the external resistor? A 0.5P B P C 2P D 4P Space for working
Mark scheme: D
Q35 · The diagram shows a low-voltage circuit for heating the water in a fish tank
35 The diagram shows a low-voltage circuit for heating the water in a fish tank. power heater supply The heater has a resistance of 3.0 Ω. The power supply has an e.m.f. of 12 V and an internal resistance of 1.0 Ω. At which rate is energy supplied to the heater? A 27 W B 36 W C 48 W D 64 W Space for working
Mark scheme: A
Q36 · The diagrams show the same cell, ammeter, potentiometer and fixed resistor connected in…
36 The diagrams show the same cell, ammeter, potentiometer and fixed resistor connected in different ways. W X d d A A Y Z d d A A The distance d between the sliding contact and a particular end of the potentiometer is varied. The current measured is then plotted against the distance d. For which two circuits will the graphs be identical? A W and X B W and Y C X and Y D Y and Z Space for working
Mark scheme: A
Q37 · What is the current in the 40 Ω resistor of the circuit shown?
37 What is the current in the 40 Ω resistor of the circuit shown? 20 Ω 20 Ω 40 Ω 20 Ω 20 Ω 10 V A zero B 0.13 A C 0.25 A D 0.50 A
Mark scheme: A
Q38 · A battery of negligible internal resistance is connected to a resistor network, an…
38 A battery of negligible internal resistance is connected to a resistor network, an ammeter and a switch S, as shown. A 4.8 Ω 7.2 Ω S 2.8 Ω When S is open, the reading on the ammeter is 250 mA. When S is closed, what is the change in the reading on the ammeter? A 1.07 A B 1.32 A C 190 mA D 440 mA Space for working
Mark scheme: C
Q39 · An isotope of thorium has a nucleon number of 232 and a proton number of 90
39 An isotope of thorium has a nucleon number of 232 and a proton number of 90. It decays to form another isotope of thorium with a nucleon number of 228. How many alpha particles and beta particles are emitted by a nucleus of thorium during this decay? alpha particles beta particles A 0 4 B 1 0 C 1 2 D 2 1
Mark scheme: C
Q40 · Four nuclei are represented below
40 Four nuclei are represented below. 28 E 25 G 25 M 24 Q 14 15 12 13 Which statement about these nuclei is correct? A An uncharged atom of element Q has 24 orbital electrons. B Nucleus M could transform into Q by emitting a beta particle. C Nuclei G and M are isotopes of the same element. D When E absorbs a neutron and then emits an alpha particle, nucleus E transforms into M. Space for working
Mark scheme: D
What was in this paper
The subtopics covered by these 40 questions, and how many questions each got. Open one in a new tab to see every Cambridge question on it.
2Energy conservation2Equations of motion2Errors and uncertainties2Linear momentum and its conservation2Momentum and Newton’s laws of motion2Practical circuits2Progressive waves2Turning effects of forces2Uniform electric fields2Characteristics of alternating currents1Density and pressure1Elastic and plastic behaviour1Electromagnetic spectrum1Energy and momentum of a photon1Equilibrium of forces1Interference1Internal energy1Kinetic theory of gases1Kirchhoff’s laws1Non-uniform motion1Potential difference and power1Potential dividers1Resistance and resistivity1Scalars and vectors1SI units1Specific heat capacity and specific latent heat1Stationary waves1Stress and strain1The diffraction grating1What you needed in this session
Cambridge’s own grade thresholds for 2014 May/June, Paper 1 · Variant 3. A higher threshold means an easier paper — the bar moves with how the cohort did.