Cambridge A Level Physics 9702 — 2014 May/June Paper 1 · Variant 1

1 Which pair of units contains one derived unit and one SI base unit? A ampere coulomb B kilogram kelvin C metre second D newton pascal

Mark scheme: A

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2 What is equivalent to 2000 microvolts? A 2 µJ C–1 B 2 mV C 2 pV D 2000 mV

Mark scheme: B

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3 The speed v of a liquid leaving a tube depends on the change in pressure ∆P and the density ρ of the liquid. The speed is given by the equation ∆ P  n v = k    ρ  where k is a constant that has no units. What is the value of n ? A 1 B 1 C 3 D 2 2 2 Space for working

Mark scheme: A

More questions on Physical quantities

4 An experiment is carried out to measure the resistance of a wire. The current in the wire is (1.0 ± 0.2) A and the potential difference across the wire is (8.0 ± 0.4) V. What is the resistance of the wire and its uncertainty? A (8.0 ± 0.2) Ω B (8.0 ± 0.6) Ω C (8 ± 1) Ω D (8 ± 2) Ω

Mark scheme: D

More questions on Errors and uncertainties

5 The Young modulus of the material of a wire is to be found. The Young modulus E is given by the equation below. 4 F l E = π d 2 x The wire is extended by a known force and the following measurements are made. Which measurement has the largest effect on the uncertainty in the value of the calculated Young modulus? measurement symbol value A length of wire before force applied l 2.043 ± 0.002 m B diameter of wire d 0.54 ± 0.02 mm C force applied F 19.62 ± 0.01 N D extension of wire with force applied x 5.2 ± 0.2 mm Space for working

Mark scheme: B

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6 A tennis ball is thrown horizontally in air from the top of a tall building. If the effect of air resistance is not negligible, what happens to the horizontal and vertical components of the ball’s velocity? horizontal component vertical component of velocity of velocity A constant constant B constant increases at a constant rate C decreases to zero increases at a constant rate D decreases to zero increases to a maximum value

Mark scheme: D

More questions on Scalars and vectors

7 An object is thrown with velocity 5.2 m s–1 vertically upwards on the Moon. The acceleration due to gravity on the Moon is 1.62 m s–2. What is the time taken for the object to return to its starting point? A 2.5 s B 3.2 s C 4.5 s D 6.4 s Space for working

Mark scheme: D

More questions on Equations of motion

8 The graph shows how the acceleration of an object moving in a straight line varies with time. acceleration 00 time The object starts from rest. Which graph shows the variation with time of the velocity of the object over the same time interval? A B velocity velocity 00 00 time time C D velocity velocity 00 time 00 time Space for working

Mark scheme: A

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9 An object of mass 4.0 kg moving with a speed of 3.0 m s–1 strikes a stationary object in an inelastic collision. Which statement is correct? A After collision, the total kinetic energy is 18 J. B After collision, the total kinetic energy is less than 18 J. C Before collision, the total kinetic energy is 12 J. D Before collision, the total kinetic energy is less than 12 J.

Mark scheme: B

More questions on Linear momentum and its conservation

10 The graph shows how the momentum of a motorcycle changes with time. 500 momentum / kg m s–1 00 10 time / s What is the resultant force on the motorcycle? A 50 N B 500 N C 2500 N D 5000 N Space for working

Mark scheme: A

More questions on Momentum and Newton’s laws of motion

11 The diagrams show two ways of hanging the same picture. nail R2 nail R1 T2 T2 T1 T1 diagram 1 diagram 2 In both cases, a string is attached to the same points on the picture and looped symmetrically over a nail in a wall. The forces shown are those that act on the nail. In diagram 1, the string loop is shorter than in diagram 2. Which information about the magnitude of the forces is correct? A R1 = R2 T1 = T2 B R1 = R2 T1 > T2 C R1 > R2 T1 < T2 D R1 < R2 T1 = T2 Space for working

Mark scheme: B

More questions on Equilibrium of forces

12 A man holds a 100 N load stationary in his hand. The combined weight of the forearm and hand is 20 N. The forearm is held horizontal, as shown. F biceps forearm 4 cm 10 cm 20 N 32 cm 100 N What is the vertical force F needed in the biceps? A 750 N B 800 N C 850 N D 900 N Space for working

Mark scheme: C

More questions on Turning effects of forces

13 A spindle is attached at one end to the centre of a lever of length 1.20 m and at its other end to the centre of a disc of radius 0.20 m. A string 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 string 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

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14 What is the average power output of a laser that can deliver 0.20 J of energy in 10 ns? A 2 nW B 20 mW C 200 kW D 20 MW

Mark scheme: D

More questions on Energy conservation

15 A weight W hangs from a trolley that runs along a rail. The trolley moves horizontally through a distance p and simultaneously raises the weight through a height q. trolley rail Y r q X weight W p As a result, the weight moves through a distance r from X to Y. It starts and finishes at rest. How much work is done on the weight during this process? A Wp B W(p + q) C Wq D Wr

Mark scheme: C

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16 The engine of a car exerts a force of 600 N in moving the car 1.0 km in 150 seconds. What is the average output power of the engine? A 4.0 W B 4.0 kW C 90 kW D 90 MW

Mark scheme: B

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17 Which statement about boiling and evaporation is correct? A Boiling can only occur at the surface of a liquid. B Evaporation can only occur at a fixed temperature. C Only boiling involves a change of phase. D When some of a liquid evaporates, the rest of the liquid becomes cooler. Space for working

Mark scheme: D

More questions on Specific heat capacity and specific latent heat

18 There is one temperature, about 0.01 °C, at which water, water vapour and ice can co-exist in equilibrium. Which statement about the properties of the molecules at this temperature is correct? A Ice molecules are closer to one another than water molecules. B The mean kinetic energy of water molecules is greater than the mean kinetic energy of ice molecules. C Water vapour molecules are less massive than water molecules. D Water vapour molecules have the same mean speed as both ice and water molecules.

Mark scheme: D

More questions on Kinetic theory of gases

19 A crystalline solid is heated at a constant rate and the change of temperature with time is shown in the graph below. temperature P Q R S time Which statement about the particles in the material is correct? A In the time from P to Q, the particles are arranged randomly. B In the time from Q to R, some particles are arranged regularly and some particles are arranged randomly. C In the time from R to S, the particles are widely spaced. D The arrangement of the particles is the same in the time from P to S. Space for working

Mark scheme: B

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20 The stress-strain graphs for three different materials are shown, not drawn to the same scales. 1 2 3 stress stress stress 00 00 00 strain strain strain The three materials are copper, rubber and glass. Which materials are represented by the graphs? 1 2 3 A copper glass rubber B copper rubber glass C glass copper rubber D glass rubber copper Space for working

Mark scheme: B

More questions on Elastic and plastic behaviour

21 The graph is a load-extension graph for a wire undergoing elastic deformation. 6 load / kg 4 2 0 0 5 10 15 20 25 extension / mm How much work is done on the wire to increase the extension from 10 mm to 20 mm? A 0.028 J B 0.184 J C 0.28 J D 0.37 J

Mark scheme: C

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22 Which statement about longitudinal waves is correct? A Longitudinal waves include radio waves travelling through air. B Particles in a longitudinal wave vibrate at right-angles to the direction of transfer of wave energy. C Some types of longitudinal wave can be polarised. D Stationary waves can be produced by the superposition of longitudinal waves.

Mark scheme: D

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23 The order of magnitude of the frequency of the longest-wavelength ultraviolet waves can be expressed as 10x Hz. What is the value of x? A 13 B 15 C 17 D 19 Space for working

Mark scheme: B

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24 The speed v of waves in deep water is given by the equation g λ v 2 = 2 π where λ is the wavelength of the waves and g is the acceleration of free fall. A student measures the wavelength λ and the frequency f of a number of these waves. Which graph should he plot to give a straight line through the origin? A f 2 against λ B f against λ2 C 1 f against λ D f 2 against λ 1

Mark scheme: D

More questions on Progressive waves

25 A stationary wave on a stretched string is set up between two points P and T. Q S P T R vibrator Which statement about the wave is correct? A Point R is at a node. B Points Q and S vibrate in phase. C The distance between P and T is three wavelengths. D The wave shown has the lowest possible frequency. Space for working

Mark scheme: B

More questions on Stationary waves

26 A parallel beam of white light passes through a diffraction grating. Orange light of wavelength 600 nm in the fourth order diffraction maximum coincides with blue light in the fifth order diffraction maximum. What is the wavelength of the blue light? A 450 nm B 480 nm C 500 nm D 750 nm

Mark scheme: B

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27 The basic principle of note production in a horn is to set up a stationary wave in an air column. mouthpiece bell horn For any note produced by the horn, a node is formed at the mouthpiece and an antinode is formed at the bell. The frequency of the lowest note is 75 Hz. What are the frequencies of the next two higher notes for this air column? first higher note second higher note / Hz / Hz A 113 150 B 150 225 C 150 300 D 225 375 Space for working

Mark scheme: D

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28 A horizontal beam of electrons is passed between two horizontal parallel plates, 2.0 cm apart, as shown. +4.0 V electron 2.0 cm beam – 4.0 V The upper plate has an electrical potential of +4.0 V, and the lower plate has an electrical potential of – 4.0 V. What is the force on each electron when between the plates? A 3.2 × 10–17 N downwards B 3.2 × 10–19 N upwards C 6.4 × 10–19 N downwards D 6.4 × 10–17 N upwards

Mark scheme: D

More questions on Uniform electric fields

29 The diagram shows two points P and Q which lie 90° apart on a circle of radius r. A positive point charge at the centre of the circle creates an electric field of magnitude E at both P and Q. P + Q r Which expression gives the work done in moving a unit positive charge from P to Q? π r  A 0 B E × r C E ×   D E × (πr ) 2 Space for working

Mark scheme: A

More questions on Electric potential

30 Two electrically-conducting cylinders X and Y are made from the same material. Their dimensions are as shown. X Y D 2D L 2L The resistance between the ends of each cylinder is measured. What is the ratio resistance of X ? resistance of Y A 2 B 1 C 1 D 1 1 1 2 4

Mark scheme: A

More questions on Resistance and resistivity

31 A battery, with a constant internal resistance, is connected to a resistor of resistance 250 Ω, as shown. 250 Ω The current in the resistor is 40 mA for a time of 60 s. During this time 6.0 J of energy is lost in the internal resistance. What are the energy supplied to the external resistor during the 60 s and the e.m.f. of the battery? energy / J e.m.f. / V A 2.4 2.4 B 2.4 7.5 C 24 10.0 D 24 12.5 Space for working

Mark scheme: D

More questions on Practical circuits

32 Which symbol represents a component whose resistance is designed to change with temperature? A B C D

Mark scheme: B

More questions on Practical circuits

33 In the circuit below, a voltmeter of resistance RV and an ammeter of resistance RA are used to measure the resistance R of the fixed resistor. + A V R – Which condition is necessary for an accurate value to be obtained for R? A R is much smaller than RV. B R is much smaller than RA. C R is much greater than RV. D R is much greater than RA. Space for working

Mark scheme: A

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34 In the circuit shown, all the resistors are identical and all the ammeters have negligible resistance. A1 A2 A3 A4 The reading on ammeter A1 is 0.6 A. What are the readings on the other ammeters? reading on reading on reading on ammeter A2 / A ammeter A3 / A ammeter A4 / A A 1.0 0.3 0.1 B 1.4 0.6 0.2 C 1.8 0.9 0.3 D 2.2 1.2 0.4

Mark scheme: D

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35 The potential difference across a component in a circuit is 2.0 V. How many electrons must flow through this component in order for it to be supplied with 4.8 J of energy? A 2.6 × 1018 B 1.5 × 1019 C 3.0 × 1019 D 6.0 × 1019 Space for working

Mark scheme: B

More questions on Potential difference and power

36 What is the total resistance between points P and Q in this network of resistors? 8 Ω 8 Ω Q 16 Ω 16 Ω 16 Ω 8 Ω 8 Ω P A 8 Ω B 16 Ω C 24 Ω D 32 Ω

Mark scheme: A

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37 Alpha, beta and gamma radiations have various depths of penetration in matter and different charges. Which row best summarises the penetration and charge of each radiation? alpha beta gamma A absorbed by a absorbed by several not fully absorbed by sheet of card mm of aluminium several cm of lead negative charge no charge no charge B absorbed by a absorbed by several not fully absorbed by sheet of card mm of aluminium several cm of lead negative charge positive charge no charge C absorbed by a absorbed by several not fully absorbed by sheet of card mm of aluminium several cm of lead positive charge negative charge no charge D absorbed by several not fully absorbed by absorbed by a mm of aluminium several cm of lead sheet of card positive charge negative charge no charge Space for working

Mark scheme: C

More questions on Atoms, nuclei and radiation

38 In 2002, two-proton radioactive decay of an isotope of iron, 45 Fe, was observed. 26 What could be the resulting product? A 43 Fe B 43 Cr C 45 Cr D 47 Ni 26 24 24 28

Mark scheme: B

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39 U++ is a doubly-ionised uranium atom. The uranium atom has a nucleon number of 235 and a proton number of 92. In a simple model of the atom, how many particles are in this ionised atom? A 235 B 325 C 327 D 329

Mark scheme: B

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40 The grid shows a number of nuclides arranged according to the number of protons and the number of neutrons in each. A nucleus of the nuclide Li 8 decays by emitting a β-particle. 3 What is the resulting nuclide? 4 A B number of protons 3 6 3 Li 7 3 Li 8 3 Li 2 3 2 He 4 2 He C D 1 1 1 H 2 1 H 0 1 2 3 4 5 6 number of neutrons Space for working

Mark scheme: A

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