UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS Cambridge International Level 3 Pre-U Certificate Principal Subject

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1 UNIVERSITY OF MRIGE INTERNTIONL EXMINTIONS ambridge International Level 3 Pre-U ertificate Principal Subject PHYSIS 979/01 Paper 1 Part Multiple hoice May/June hour 15 minutes * * dditional Materials: RE THESE INSTRUTIONS FIRST Multiple hoice nswer Sheet Soft clean eraser Soft pencil (type or H is recommended) Write in soft pencil. o not use staples, paper clips, highlighters, glue or correction fluid. Write your name, entre number and candidate number on the nswer Sheet in the spaces provided unless this has been done for you. There are forty questions on this paper. nswer all questions. For each question there are four possible answers,, and. hoose the one you consider correct and record your choice in soft pencil on the separate nswer Sheet. Read the instructions on the nswer Sheet very carefully. Each correct answer will score one mark. mark will not be deducted for a wrong answer. ny working should be done in this booklet. This document consists of 3 printed pages and 1 blank page. I10 06_979_01/4RP ULES 010 [Turn over

2 ata gravitational field strength close to Earth s surface g = 9.81 N kg 1 elementary charge e = speed of light in vacuum c = m s 1 Planck constant permittivity of free space h = J s ε = F m 1 0 gravitational constant G = N m kg electron mass proton mass unified atomic mass constant m e = kg m p = kg u = kg molar gas constant R = 8.31 J K 1 mol 1 vogadro constant N = mol 1 oltzmann constant k = J K 1 Stefan-oltzmann constant σ = W m K 4 ULES /01/M/J/10

3 3 Formulae uniformly accelerated motion s = ut + 1 at magnetic force F = Il sin θ v = u + as F = Qv sin θ u + v s = t electromagnetic induction E = heating E = mc θ Hall effect V = vd d( NΦ) dt change of state E = ml time dilation t = t v 1 c refraction n = n = sinθ sinθ v v 1 1 kinetic theory work done on/by a gas photon energy E = hf radioactive decay de roglie wavelength λ = h p 1 m<c 3 > = kt W = p V dn dt = λn N = N 0 e λ t simple harmonic motion x = cos ωt t In 1 = λ energy stored in a capacitor v = ω sin ωt attenuation losses I = I 0 e µx a = ω cos ωt mass-energy equivalence E = c m F = mω x E = 1 hydrogen energy levels E n = ev m ω n W = Q1Q electric force F = 4πε r electrostatic potential energy W = 1 QV Heisenberg uncertainty principle 0 Q1Q 4πε r Gm1m gravitational force F = r gravitational potential energy E = 0 Gm 1 m r Wien s law p x ğ E t ğ h π h π 1 λ max T Stefan s law L = 4πσr T 4 electromagnetic radiation from a moving source λ λ f f v c ULES /01/M/J/10 [Turn over

4 4 1 Which quantity is a vector? kinetic energy speed weight work Two forces F 1 and F act with an angle θ between them. F θ F 1 Which combination could produce a resultant force of magnitude 1 N? F 1 / N F / N θ 1 1 less than more than 90 but less than less than 90 1 more than 90 but less than 180 ULES /01/M/J/10

5 5 3 racing driver enters the home straight at 50 m s 1. He then accelerates uniformly until he passes the finish line, 43 m away. t this time he is moving at 70 m s 1. Which statement is correct? The acceleration is 0 m s. The time taken to reach the finish line is.0 s. The time taken to reach the finish line is 7. s. When the driver s speed is 60 m s 1, he is 16 m from the finish line. 4 ball is thrown with kinetic energy K from ground level at an angle of 45 to the horizontal. Which statement is not correct? The kinetic energy of the ball is K at the maximum height. The kinetic energy of the ball is K when the ball reaches a height equal to half the maximum height. The potential energy of the ball is K at the maximum height. The potential energy of the ball is K 4 when the ball reaches a height equal to half the maximum height. ULES /01/M/J/10 [Turn over

6 6 5 The diagram shows a model of an arm. force applied by the biceps muscle can hold the arm in equilibrium while it supports a load. force applied by the biceps at angle θ to the vertical θ biceps pivot weight W 1 of forearm and hand weight W of load to be lifted Which statement is correct when the arm is in equilibrium in the position shown? The force at the pivot is zero. The force from the biceps is bigger when the load is moved nearer to the pivot. The force from the biceps is equal to W 1 + W. The resultant force on the biceps is zero. ULES /01/M/J/10

7 7 6 man applies a horizontal force to a supermarket trolley and the trolley accelerates uniformly in the direction of the force. Which statement is correct? The force applied by the man on the trolley equals the force applied by the trolley on the man. The force applied by the man on the trolley is greater than the force applied by the trolley on the man. The forces acting on the trolley are in equilibrium. The total frictional force acting on the trolley equals the force applied by the man on the trolley. 7 body of mass 8.0 kg moving at 5.0 m s 1 collides with a stationary body of mass 1 kg. They both move off with the same velocity. Which statement is correct? Kinetic energy is conserved and their common velocity is.0 m s 1. Kinetic energy is conserved and their common velocity is 3. m s 1. Momentum is conserved and their common velocity is.0 m s 1. Momentum is conserved and their common velocity is 3. m s 1. 8 vehicle is used to explore under the sea. The force due to the water on its horizontal rectangular window, which measures 50.0 cm by 40.0 cm, is N. t what depth is the window? (verage density of sea water is kg m 3 ) m 163 m m m ULES /01/M/J/10 [Turn over

8 8 9 ball of mass m falls freely from rest. When it has reached a speed v, it strikes a vertical spring. The spring is compressed by a distance y before the ball begins to move upwards. y ssume that all the energy the ball loses becomes elastic potential energy in the spring. What is the average force exerted by the spring during its compression? mv y m ( v ) gy y mv y m ( v ) + gy y 10 On the surface of Titan, Saturn s largest moon, a mass of 5.0 kg experiences a gravitational force of 6.8 N. What is its speed of impact on the surface when released from rest at a height of 5.0 m? 3.7 m s 1 8. m s m s m s 1 ULES /01/M/J/10

9 9 11 scale model of a table is made so that all its linear dimensions are one tenth of those of the real table (scale 1 : 10). The model is made from the same wood as the table. What is the value of stress in the legs of the model? stress in the legs of the real table When a force is applied to a metal wire, the wire can undergo elastic or plastic deformation. Which statement is correct? In elastic deformation, stress is always proportional to strain. In plastic deformation, the original length is regained when the load is removed. Plastic deformation always starts at the limit of proportionality. There is no elastic deformation past the yield point. ULES /01/M/J/10 [Turn over

10 10 13 The solid line on the graph shows how the length of a rubber band varies when an increasing load is applied. The dotted line shows how the length subsequently varies as the load is gradually decreased. 40 load / N length / m Which statement is correct? The energy recovered when the load is removed is about 10 J. The energy remaining in the rubber band after one cycle of loading and unloading is about 3 J. The total work done on the rubber band during one cycle of loading and unloading is about 14 J. The work done in stretching the rubber band is about 5 J. ULES /01/M/J/10

11 11 14 small electric motor is used to raise a weight of.0 N at constant speed through a vertical height of 80 cm in 4.0 s. motor.0 N 80 cm The efficiency of the motor is 0 %. What is the electrical power supplied to the motor? W 0.80 W.0 W 00 W ULES /01/M/J/10 [Turn over

12 1 15 Rain from a thunderstorm reaches the ground at a speed of 1 m s 1. The graph shows how the total mass of deposited rain increases with time. total mass of rain / 10 6 kg time / minutes What is the average power delivered by the rain as it hits the ground? W W W W 16 rocket is travelling away from Earth at a speed of 11 km s 1 in a direction at 60 to the Earth s surface at a point where the gravitational field strength is 9.3 N kg 1. If the mass of the rocket at this moment is kg, at what rate is the rocket gaining gravitational potential energy? W W W W ULES /01/M/J/10

13 13 17 n object falling at terminal velocity through air is converting gravitational potential energy to kinetic energy. gravitational potential energy to thermal energy. kinetic energy to gravitational potential energy. kinetic energy to thermal energy. 18 copper wire of length 3.0 m has a resistivity of Ω m and resistance 15.9 Ω. What is the diameter of the wire? (ssume the wire has a uniform circular cross-section.) m m m m 19 One type of charger for a mobile phone supplies a current of 40 m for one hour. How many electrons flow to the mobile phone? ULES /01/M/J/10 [Turn over

14 14 0 In the diagrams, all resistors are identical. Which network has the lowest resistance? 1 high-resistance voltmeter connected directly across the terminals of a cell reads 1.50 V. When a.0 Ω resistor is also connected across the cell the voltmeter reading drops to 1.0 V. What is the internal resistance of the cell? 0.50 Ω 1.6 Ω.0 Ω.5 Ω ULES /01/M/J/10

15 15 The diagram shows a 6 V battery, with negligible internal resistance, connected in series to two resistors R 1 and R. R 1 has a resistance of 500 Ω and R has a resistance of 1000 Ω. 6 V 500 Ω 1000 Ω R 1 R third resistor with a resistance of 500 Ω is placed in parallel across R. Which statement about the new circuit is correct? The current in R is larger than before. The current through the battery is smaller than before. The potential difference (p.d.) across R 1 is larger than before. The p.d. across R is now greater than the p.d. across R 1. ULES /01/M/J/10 [Turn over

16 16 3 The speed of light in air is m s 1 and the speed of light in water is m s 1. laser beam strikes a water / air boundary at an angle of 70 to the boundary. normal air side view 70 water t which angle to the normal does the beam leave the surface? Why does white light passing through a glass prism split into a spectrum of colours? The frequency of the light changes as it passes into the prism. The light is refracted both on entering and leaving the prism. The refractive index of the glass depends on its density. The refractive index of the glass depends on the wavelength of the light. ULES /01/M/J/10

17 17 5 Which statements are correct for all transverse waves? 1 The waves are electromagnetic. The waves can be polarised. 3 The waves can travel through a vacuum. 1 only only 1 and 3 only 1, and 3 6 The solid line shows a diagram of a rope on which there is a progressive wave travelling to the right. The dotted line shows the same rope 0. s later. height above reference level / m distance moved distance / m Which statement is correct? The amplitude of the wave is about 0. m. The frequency of the wave is about 0.6 Hz. The speed of the wave is about 30 m s 1. The wavelength of the portion shown is about 10 m. ULES /01/M/J/10 [Turn over

18 18 7 Which correctly shows regions of the electromagnetic spectrum in order of increasing wavelength? gamma infra-red visible radio microwave ultraviolet visible infra-red radio microwave infra-red visible ultraviolet visible infra-red microwave 8 Two waves are defined to be coherent if they are emitted by identical sources close together. they have a constant phase difference between them. they have the same amplitude and frequency. they have the same wavelength and speed. 9 What is the relationship between phase difference φ in radians, path difference x and wavelength λ? φ = λ x φ = x λ φ = πx λ φ = πλ x ULES /01/M/J/10

19 19 30 beam of microwaves, with wavelength mm, passes through two slits in a metal sheet. Q and R are microwave detectors. Q beam of microwaves 46 mm 506 mm slit slit 451 mm 440 mm R metal sheet When Q and R are at the distances shown, what are their readings? Q R maximum maximum maximum zero zero maximum zero zero ULES /01/M/J/10 [Turn over

20 0 31 loudspeaker is placed facing a wall. It emits a continuous note of constant frequency. standing wave is set up between the loudspeaker and the wall. t the wall, the standing wave has a node of displacement and an antinode of pressure. The frequency of the note is now doubled and a standing wave is again formed. What will there now be at the wall? an antinode of displacement and an antinode of pressure an antinode of displacement and a node of pressure a node of displacement and an antinode of pressure a node of displacement and a node of pressure 3 The diagram shows a source of white light. The light is incident on a diffraction grating. white light source direction of movement diffraction grating viewing telescope Which diagram represents the spectrum observed when the viewing telescope is moved from the position shown and in the direction shown on the diagram? w r v r v w v r v r w r v r v key w = white r = red v = violet w v r v r ULES /01/M/J/10

21 1 33 Hydrogen bombs operate with tritium, a radioactive isotope of hydrogen with a half-life of s. It has been proposed that if the production of tritium were halted, countries storing hydrogen bombs would have to replenish supplies from existing bombs. Eventually there would not be enough tritium to make any bombs. country has a stockpile of 000 hydrogen bombs. fter how many years would it be unable to make a single bomb? 54 years 59 years years years 34 In an alpha-particle scattering experiment, which factors could be increased so as to increase the number of alpha-particles scattered through large angles by a thin metal foil? 1 alpha-particle energy thickness of foil 3 the atomic number of the metal of the foil 1 and 1 and 3 only and 3 ULES /01/M/J/10 [Turn over

22 16 35 From which nuclide is 84 Po the product of an alpha-particle emission? 14 Hg Pb 86 Rn 88 Ra Which statement about radioactive nuclides is correct? The half-life is proportional to the probability of decay per unit time of each nucleus. The higher the temperature, the larger the probability of decay per unit time of each nucleus. The probability of decay per unit time of each nucleus decreases with time. The smaller the probability of decay per unit time, the longer the half-life. 37 What is the de roglie wavelength of an electron having an energy of 54 ev? m m m m ULES /01/M/J/10

23 3 38 Which graph shows the relationship between photon energy E and wavelength λ of electromagnetic waves? E E E E λ 0 0 λ λ λ 39 Monochromatic light of wavelength 650 nm is incident on a clean potassium surface. The work function of potassium is 1.81 ev. What is the maximum velocity of the electrons emitted? m s m s m s m s 1 40 Which piece of evidence about the photoelectric effect cannot be explained using a wave model? Increasing the intensity of the illumination increases the rate at which electrons are ejected. Shining ultraviolet radiation onto a zinc surface ejects electrons. Shining visible light onto a potassium surface ejects electrons. There is a threshold frequency below which no electrons are ejected from a metal surface. ULES /01/M/J/10

24 4 LNK PGE Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (ULES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity. University of ambridge International Examinations is part of the ambridge ssessment Group. ambridge ssessment is the brand name of University of ambridge Local Examinations Syndicate (ULES), which is itself a department of the University of ambridge. ULES /01/M/J/10

UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Advanced Subsidiary Level and Advanced Level

UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Advanced Subsidiary Level and Advanced Level *1945541248* UNIVERSITY OF MRIGE INTERNTIONL EXMINTIONS General ertificate of Education dvanced Subsidiary Level and dvanced Level PHYSIS 972/1 Paper 1 Multiple hoice October/November 27 dditional Materials: