Cambridge A Level Physics 9702 — 2011 May/June Paper 1 · Variant 3

Question 1

1 A force of 5.0 N pushes a ball due north and another force of 3.0 N pushes it due east. N 5.0 N 3.0 N What is the magnitude of the net force acting on the ball? A 2.8 N B 4.0 N C 5.8 N D 8.0 N

Accepted Answer

C

Question 2

2 Decimal sub-multiples and multiples of units are indicated using a prefix to the unit. For example, the prefix milli (m) represents 10–3. Which row gives the sub-multiples or multiples represented by pico (p) and giga (G)? pico (p) giga (G) A 10–9 109 B 10–9 1012 C 10–12 109 D 10–12 1012

Accepted Answer

C

Question 3

3 Which definition is correct and uses only quantities rather than units? A Density is mass per cubic metre. B Potential difference is energy per unit current. C Pressure is force per unit area. D Speed is distance travelled per second. Space for working

Accepted Answer

C

Question 4

4 The diagram shows an experiment to measure the speed of a small ball falling at constant speed through a clear liquid in a glass tube. 1.50 s 115 mm 3.50 s 385 mm There are two marks on the tube. The top mark is positioned at 115 ± 1 mm on the adjacent rule and the lower mark at 385 ± 1 mm. The ball passes the top mark at 1.50 ± 0.02 s and passes the lower mark at 3.50 ± 0.02 s. 385 − 115 270  = 135 mm s–1. The constant speed of the ball is calculated by = 3.50 − 1.50 2 . 00 Which expression calculates the fractional uncertainty in the value of this speed? A 2 + 0 . 04 270 2 . 00 B 2 – 0 . 04 270 2 . 00 C 1  × 0 . 02 270 2 . 00 D 1  ÷ 0 . 02 270 2 . 00 Space for working

Accepted Answer

A

Question 5

5 The diagram shows a trace of a wave on a cathode-ray oscilloscope. The vertical and horizontal gridlines have a spacing of 1.0 cm. The voltage scaling is 4 V cm–1 and the time scaling is 5 ms cm–1. 1 cm 1 cm What are the amplitude and period of the wave? amplitude / V period / ms A 1.5 4 B 5.0 10 C 6.0 20 D 12.0 20 Space for working

Accepted Answer

C

Question 6

6 A body has a weight of 58.9 N when on the Earth. On the Moon, the acceleration of free fall is 1.64 m s–2. What are the weight and the mass of the body when it is on the Moon? weight / N mass / kg A 9.85 1.00 B 9.85 6.00 C 58.9 1.00 D 58.9 6.00 Space for working

Accepted Answer

B

Question 7

7 The graph shows how the acceleration of an object moving in a straight line varies with time. acceleration 00 time Which graph shows the variation with time of the velocity of the object? A B velocity velocity 00 00 time time C D velocity velocity 00 time 00 time Space for working

Accepted Answer

A

Question 8

8 A ball is released from rest at time zero. After 1.0 s it bounces inelastically from a horizontal surface and rebounds, reaching the top of its first bounce after 1.5 s. 10 velocity / m s–1 5 0 time / s 0 0.5 1.0 . 1.5 –5 What is the total displacement of the ball from its original position after 1.5 s? A 1.25 m B 3.75 m C 5.00 m D 6.25 m

Accepted Answer

B

Question 9

9 A molecule of mass m travelling horizontally with velocity u hits a vertical wall at right-angles to its velocity. It then rebounds horizontally with the same speed. What is its change in momentum? A zero B mu C – mu D – 2mu Space for working

Accepted Answer

D

Question 10

10 A body of mass m, moving at velocity v, collides with a stationary body of the same mass and sticks to it. Which row describes the momentum and kinetic energy of the two bodies after the collision? momentum kinetic energy A mv 1 mv 2 4 B mv 1 mv 2 8 C 2mv 1 mv 2 2 D 2mv mv 2

Accepted Answer

A

Question 11

11 The diagram shows four forces applied to a circular object. 30 N 20 N 20 N 30 N Which row describes the resultant force and resultant torque on the object? resultant force resultant torque A zero zero B zero non-zero C non-zero zero D non-zero non-zero Space for working

Accepted Answer

D

Question 12

12 A uniform metre rule of mass 100 g is supported by a pivot at the 40 cm mark and a string at the 100 cm mark. The string passes round a frictionless pulley and carries a mass of 20 g as shown in the diagram. 0 20 40 60 80 100 20 g At which mark on the rule must a 50 g mass be suspended so that the rule balances? A 4 cm B 36 cm C 44 cm D 64 cm Space for working

Accepted Answer

C

Question 13

13 A cable car of weight W hangs in equilibrium from its cable at point P. The cable has tensions T1 and T2 as shown. T1 cable P T2 weight W cable car Which diagram correctly represents the forces acting at point P? A B C D T2 T2 T2 T2 W T1 W T1 W T1 W T1 Space for working

Accepted Answer

B

Question 14

14 A steel sphere is dropped vertically onto a horizontal metal plate. The sphere hits the plate with a speed u, leaves it at a speed v, and rebounds vertically to half of its original height. Which expression gives the value of u v ? A 1 B 1 C 1 D 1 – 1 2 2 2 2 2

Accepted Answer

C

Question 15

15 A block of mass 2.0 kg is released from rest on a slope. It travels 7.0 m down the slope and falls a vertical distance of 3.0 m. The block experiences a frictional force parallel to the slope of 5.0 N. 2.0 kg 7.0 m 3.0 m What is the speed of the block after falling this distance? A 4.9 m s–1 B 6.6 m s–1 C 8.6 m s–1 D 10.1 m s–1

Accepted Answer

A

Question 16

16 A body travelling with a speed of 10 m s–1 has kinetic energy 1500 J. If the speed of the body is increased to 40 m s–1, what is its new kinetic energy? A 4500 J B 6000 J C 24 000 J D 1 350 000 J Space for working

Accepted Answer

C

Question 17

17 A man has a mass of 80 kg. He ties himself to one end of a rope which passes over a single fixed pulley. He pulls on the other end of the rope to lift himself up at an average speed of 50 cm s–1. What is the average useful power at which he is working? A 40 W B 0.39 kW C 4.0 kW D 39 kW

Accepted Answer

B

Question 18

18 Which process does not require energy to be supplied? A boiling B evaporation C freezing D melting

Accepted Answer

C

Question 19

19 1.5 m3 of water is mixed with 0.50 m3 of alcohol. The density of water is 1000 kg m–3 and the density of alcohol is 800 kg m–3. What is the density of the mixture with volume 2.0 m3? A 850 kg m–3 B 900 kg m–3 C 940 kg m–3 D 950 kg m–3 Space for working

Accepted Answer

D

Question 20

20 The Young modulus E can be determined from measurements made when a wire is stretched. Which quantities would be measured in order to determine E ? A mass of original length diameter of wire extension of wire stretching load of wire B mass of new length cross-sectional diameter of wire stretching load of wire area of wire C mass of wire original length cross-sectional new length of wire area of wire of wire D mass of wire new length diameter of wire extension of wire of wire Space for working

Accepted Answer

A

Question 21

21 A long, thin metal wire is suspended from a fixed support and hangs vertically. Masses are suspended from its lower end. The load on the lower end is increased from zero and then decreased again back to zero. The diagram shows the force-extension graph produced. force T S R 0 0 V extension Where on the graph would the elastic limit be found? A anywhere between point R and point S B beyond point S but before point T C exactly at point S D exactly at point T Space for working

Accepted Answer

B

Question 22

22 A source of sound of constant power P is situated in an open space. The intensity I of sound at distance r from this source is given by I = P . 4 r π 2 How does the amplitude a of the vibrating air molecules vary with the distance r from the source? A a ∝ r 1 B a ∝ 1 C a ∝ r D a ∝ r 2 r 2

Accepted Answer

A

Question 23

23 The four graphs represent a progressive wave on a stretched string. Graphs A and B show how the displacement d varies with distance x along the string at one instant. Graphs C and D show how the displacement d varies with time t at a particular value of x. The labels on the graphs are intended to show the wavelength λ, the period T and the amplitude a of the wave, but only one graph is correctly labelled. Which graph is correctly labelled? A B T λ d d a 0 0 a 0 x 0 x C D λ T d d a a 0 0 0 t 0 t Space for working

Accepted Answer

D

Question 24

24 Which statement about sound waves in air at constant temperature is correct? A Amplitude is inversely proportional to velocity. B Frequency is inversely proportional to wavelength. C Velocity is proportional to wavelength. D Wavelength is proportional to amplitude.

Accepted Answer

B

Question 25

25 Which electromagnetic wave phenomenon is needed to explain the spectrum produced when white light falls on a diffraction grating? A coherence B interference C polarisation D refraction Space for working

Accepted Answer

B

Question 26

26 A diffraction grating with 500 lines per mm is used to observe diffraction of monochromatic light of wavelength 600 nm. The light is passed through a narrow slit and the grating is placed so that its lines are parallel to the slit. Light passes through the slit and then the grating. grating X slit light Y Z An observer views the slit through the grating at different angles, moving his head from X parallel to the grating, through Y, opposite the slit, to Z parallel to the grating on the opposite side. How many images of the slit does he see? A 3 B 4 C 6 D 7 Space for working

Accepted Answer

D

Question 27

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 the lowest note produced by a horn, a node is formed at the mouthpiece and the antinode is formed at the bell. The frequency of this 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

Accepted Answer

D

Question 28

28 Two parallel plates, a distance 25 mm apart, have a potential difference between them of 12 kV. What is the force on an electron when it is in the uniform electric field between the plates? A 4.8 × 10–20 N B 7.7 × 10–20 N C 4.8 × 10–17 N D 7.7 × 10–14 N Space for working

Accepted Answer

D

Question 29

29 A potential difference is applied between two metal plates that are not parallel. Which diagram shows the electric field between the plates? A B + – + – C D + – + – Space for working

Accepted Answer

A

Question 30

30 The diagram shows a charged particle as it approaches a pair of charged parallel plates in a vacuum. – – – – – – – – + + + + + + + + Which row describes the horizontal and vertical components of its motion as it travels between the plates? horizontal component vertical component A constant acceleration constant acceleration B constant acceleration constant velocity C constant velocity constant acceleration D constant velocity constant velocity

Accepted Answer

C

Question 31

31 A battery is marked 9.0 V. What does this mean? A Each coulomb of charge from the battery supplies 9.0 J of electrical energy to the whole circuit. B The battery supplies 9.0 J to an external circuit for each coulomb of charge. C The potential difference across any component connected to the battery will be 9.0 V. D There will always be 9.0 V across the battery terminals. Space for working

Accepted Answer

A

Question 32

32 A copper wire of cross-sectional area 2.0 mm2 carries a current of 10 A. How many electrons pass through a given cross-section of the wire in one second? A 1.0 × 101 B 5.0 × 106 C 6.3 × 1019 D 3.1 × 1025

Accepted Answer

C

Question 33

33 Four resistors of equal value are connected as shown. W Y X Z How will the powers to the resistors change when resistor W is removed? A The powers to X, Y and Z will all increase. B The power to X will decrease and the powers to Y and Z will increase. C The power to X will increase and the powers to Y and Z will decrease. D The power to X will increase and the powers to Y and Z will remain unaltered. Space for working

Accepted Answer

C

Question 34

34 The graphs show possible current-voltage (I-V ) relationships for a filament lamp and for a semiconductor diode. P Q R S I I I I 00 00 00 00 V V V V Which row best specifies the correct I-V graphs for the lamp and the diode? semiconductor filament lamp diode A P R B P S C Q R D Q S Space for working

Accepted Answer

A

Question 35

35 The resistance of a metal cube is measured by placing it between two parallel plates, as shown. X Y The cube has volume V and is made of a material with resistivity ρ. The connections to the cube have negligible resistance. Which expression gives the electrical resistance of the metal cube between X and Y? 1 2 ρ ρ A ρ V 3 B ρ V 3 C D 1 2 V 3 V 3 Space for working

Accepted Answer

C

Question 36

36 In the circuit shown, XY is a length L of uniform resistance wire. R1 and R2 are unknown resistors. J is a sliding contact that joins the junction of R1 and R2 to points on XY through a small signal lamp S. L x – X Y + J S R1 R2 V  of the potential differences across R1 and R2, a point is found on XY at To determine the ratio 1 V 2 which the lamp is off. This point is at a distance x from X. V ? What is the value of the ratio 1 V 2 L x L − x x A B C D x L x L − x Space for working

Accepted Answer

D

Question 37

37 The diagram shows part of a current-carrying circuit. The ammeter has negligible internal resistance. 1.0 Ω 2.0 Ω A 5.0 A 5.0 A 5.0 Ω What is the reading on the ammeter? A 0.7 A B 1.3 A C 1.5 A D 1.7 A

Accepted Answer

C

Question 38

38 Which statement about nuclei is correct? A Different isotopic nuclei have different proton numbers. B For some nuclei, the nucleon number can be less than the proton number. C In some nuclear processes, mass-energy is not conserved. D Nucleon numbers of nuclei are unchanged by the emission of β-particles. Space for working

Accepted Answer

D

Question 39

39 The first artificial radioactive substance was made by bombarding aluminium, 27 A l , with 13 α-particles. This produced an unstable isotope of phosphorus, 30 P . 15 What was the by-product of this reaction? A an α-particle B a β-particle C a γ-ray D a neutron

Accepted Answer

D

Question 40

40 Uranium-238, 238 U , decays by α-emission into a daughter product which in turn decays by 92 β-emission into a grand-daughter product. What is the grand-daughter product? A 234 Th B 234 Pa C 234 U D 230 Th 90 91 9 2 90 Space for working

Accepted Answer

B

Question paper28 pages

Mark scheme2 pages

Questions as text

Q1 · A force of 5.0 N pushes a ball due north and another force of 3.0 N pushes it due east

Q2 · Decimal sub-multiples and multiples of units are indicated using a prefix to the unit

Q3 · Which definition is correct and uses only quantities rather than units?

Q4 · The diagram shows an experiment to measure the speed of a small ball falling at constant…

Q5 · The diagram shows a trace of a wave on a cathode-ray oscilloscope

Q6 · A body has a weight of 58.9 N when on the Earth

Q7 · The graph shows how the acceleration of an object moving in a straight line varies with…

Q8 · A ball is released from rest at time zero

Q9 · A molecule of mass m travelling horizontally with velocity u hits a vertical wall at…

Q10 · A body of mass m, moving at velocity v, collides with a stationary body of the same mass…

Q11 · The diagram shows four forces applied to a circular object

Q12 · A uniform metre rule of mass 100 g is supported by a pivot at the 40 cm mark and a string…

Q13 · A cable car of weight W hangs in equilibrium from its cable at point P

Q14 · A steel sphere is dropped vertically onto a horizontal metal plate

Q15 · A block of mass 2.0 kg is released from rest on a slope

Q16 · A body travelling with a speed of 10 m s–1 has kinetic energy 1500 J

Q17 · A man has a mass of 80 kg

Q18 · Which process does not require energy to be supplied?

Q19 · 1.5 m3 of water is mixed with 0.50 m3 of alcohol

Q20 · The Young modulus E can be determined from measurements made when a wire is stretched

Q21 · A long, thin metal wire is suspended from a fixed support and hangs vertically

Q22 · A source of sound of constant power P is situated in an open space

Q23 · The four graphs represent a progressive wave on a stretched string

Q24 · Which statement about sound waves in air at constant temperature is correct?

Q25 · Which electromagnetic wave phenomenon is needed to explain the spectrum produced when…

Q26 · A diffraction grating with 500 lines per mm is used to observe diffraction of…

Q27 · The basic principle of note production in a horn is to set up a stationary wave in an air…

Q28 · Two parallel plates, a distance 25 mm apart, have a potential difference between them of…

Q29 · A potential difference is applied between two metal plates that are not parallel

Q30 · The diagram shows a charged particle as it approaches a pair of charged parallel plates…

Q31 · A battery is marked 9.0 V

Q32 · A copper wire of cross-sectional area 2.0 mm2 carries a current of 10 A

Q33 · Four resistors of equal value are connected as shown

Q34 · The graphs show possible current-voltage (I-V ) relationships for a filament lamp and for…

Q35 · The resistance of a metal cube is measured by placing it between two parallel plates, as…

Q36 · In the circuit shown, XY is a length L of uniform resistance wire

Q37 · The diagram shows part of a current-carrying circuit

Q38 · Which statement about nuclei is correct?

Q39 · The first artificial radioactive substance was made by bombarding aluminium, 27 A l…

Q40 · Uranium-238, 238 U , decays by α-emission into a daughter product which in turn decays by…

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