*131525371* ambridge International Examinations ambridge International dvanced Subsidiary and dvanced Level PHYSIS 972/12 Paper 1 Multiple hoice May/June 217 dditional Materials: Multiple hoice nswer Sheet Soft clean eraser Soft pencil (type or H is recommended) 1 hour 15 minutes RE THESE INSTRUTIONS FIRST Write in soft pencil. o not use staples, paper clips, 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. O NOT WRITE IN NY ROES. 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. Electronic calculators may be used. This document consists of 18 printed pages and 2 blank pages. I17 6_972_12/2RP ULES 217 [Turn over
2 ata speed of light in free space c = 3. 1 8 m s 1 permeability of free space µ = 4π 1 7 H m 1 permittivity of free space ε = 8.85 1 12 F m 1 1 ( = 8.99 1 9 m F 1 ) 4πε elementary charge the Planck constant unified atomic mass unit rest mass of electron rest mass of proton e = 1.6 1 19 h = 6.63 1 34 J s 1 u = 1.66 1 27 kg m e = 9.11 1 31 kg m p = 1.67 1 27 kg molar gas constant R = 8.31 J K 1 mol 1 the vogadro constant N = 6.2 1 23 mol 1 the oltzmann constant k = 1.38 1 23 J K 1 gravitational constant G = 6.67 1 11 N m 2 kg 2 acceleration of free fall g = 9.81 m s 2 ULES 217 972/12/M/J/17
3 Formulae 2 uniformly accelerated motion s = ut + 1 at 2 v 2 = u 2 + 2as work done on/by a gas W = p V gravitational potential φ = Gm r hydrostatic pressure p = ρ gh pressure of an ideal gas p = 1 Nm <c 2 > 3 V simple harmonic motion velocity of particle in s.h.m. a = ω 2 x v = v cos ωt 2 2 x v = ± ω ( x ) oppler effect f = o electric potential V = fsv v ± v s Q 4πε r capacitors in series 1 / = 1 / 1 + 1 / 2 +... capacitors in parallel = 1 + 2 +... energy of charged capacitor electric current 1 W = QV 2 I = nvq resistors in series R = R 1 + R 2 +... resistors in parallel 1 / R = 1 / R 1 + 1 / R 2 +... Hall voltage alternating current/voltage I V H = ntq x = x sin ωt radioactive decay x = x exp( λt) decay constant λ =.693 t 1 2 ULES 217 972/12/M/J/17 [Turn over
4 1 What is the approximate average speed of a winning female Olympic athlete running a 1 m race? 6 m s 1 9 m s 1 12 m s 1 15 m s 1 2 Two forces act on a circular disc as shown. 3 N 4 N Which diagram shows the line of action of the resultant force? 5 N 5 N 5 N 5 N 3 What correctly expresses the volt in terms of SI base units? Ω W 1 kg m 2 s 1 1 kg m 2 s 3 1 ULES 217 972/12/M/J/17
5 4 The current in a block of semiconductor is 3. m when there is a potential difference (p.d.) of 1. V across it. The dimensions of the block and the direction of the current in it are as shown. 15. mm 3. m 3. mm 15. mm The electrical meters used are accurate to ±.1 m and ±.1 V. The dimensions of the block are accurate to ±.2 mm. What is the resistivity of the semiconductor? 1. ±.2 Ω m 1. ±.3 Ω m 1. ±.5 Ω m 1. ±.8 Ω m 5 The diameter of a cylindrical metal rod is measured using a micrometer screw gauge. The diagram below shows an enlargement of the scale on the micrometer screw gauge when taking the measurement. 4 2 3.5 mm / rev 3 What is the cross-sectional area of the rod? 3.81 mm 2 11.4 mm 2 22.8 mm 2 45.6 mm 2 ULES 217 972/12/M/J/17 [Turn over
6 6 ball is set in motion at P on a frictionless surface. It moves up slope PQ, along the horizontal surface QR and finally descends slope RS. Q R P S Which graph could represent the variation with time t of the ball s speed v as the ball moves from P to S? v v t t v v t t 7 rubber 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 for the short time that the ball is in contact with the table? F F F F t t t t ULES 217 972/12/M/J/17
7 8 golf ball of mass m is dropped onto a hard surface from a height h 1 and rebounds to a height h 2. The momentum of the golf ball just as it reaches the surface is different from its momentum just as it leaves the surface. What is the total change in the momentum of the golf ball between these two instants? (Ignore air resistance.) m 2gh1 m 2gh2 m 2gh1 + m 2gh2 m g( h 1 h ) 2 2 m g( h 1 + h ) 2 2 9 book of weight W is at rest on a table. student attempts to state Newton s third law of motion by saying that action equals reaction. book W table If the weight of the book is the action force, what is the reaction force? the force W acting downwards on the Earth from the table the force W acting upwards on the book from the table the force W acting upwards on the Earth from the book the force W acting upwards on the table from the floor ULES 217 972/12/M/J/17 [Turn over
8 1 metal cylinder is suspended vertically in equilibrium by a cord. The diagram shows the cylinder in four different positions P, Q, R and S. T T T T R S Q P metal cylinder water Which statement explains the variation of the tension T in the cord? t P and at Q, the tension T in the cord is the same because the difference in pressure between the top and bottom of the cylinder is the same. t Q, the tension T in the cord is less than at P because, at smaller depth, liquid pressure is smaller. t R, the tension T in the cord is less than at P because atmospheric pressure is less than water pressure. t S, the tension T in the cord is greater than at P because atmospheric pressure at S exerts no force on the top or bottom of the cylinder. ULES 217 972/12/M/J/17
11 In a machine, many couples act on a rotating object as shown. 9 25 N 5 N 3 N 6.5 cm 4. cm 16 N 16 N 3 N 25 N 1 cm 12 cm 5 N What is the resultant torque acting on the rotating object? 4.7 N m 8.6 N m 9.3 N m 17.1 N m 12 uniform beam is pivoted at P as shown. Weights of 1 N and 2 N are attached to its ends. The length of the beam is marked at.1 m intervals. The weight of the beam is 1 N. t which point should a further weight of 2 N be attached to achieve equilibrium?.6 m.4 m.1 m 1 N P 2 N 13 What are the SI base units of the quantity pressure? density s 2 kg 2 s 2 kg 2 m 2 s 2 m 2 s 2 ULES 217 972/12/M/J/17 [Turn over
1 14 Which quantities are conserved in an inelastic collision? kinetic energy total energy linear momentum conserved not conserved conserved conserved not conserved not conserved not conserved conserved conserved not conserved conserved not conserved 15 cyclist is travelling at a constant speed up a hill. The frictional force resisting the cyclist s motion is 8. N. The cyclist uses 45 J of energy to travel a distance of 2 m. What is the increase in the gravitational potential energy of the cyclist? 16 J 29 J 44 J 61 J 16 stone of mass m falls from rest at the top of a cliff of height h into the sea below. Just before hitting the sea the stone has speed v. What is the average force of air resistance acting on the stone during its fall? mg m ( v 2 2gh) h v 2 m g 2 h m gh v 2 2 17 railway engine accelerates a train of total mass 12 tonnes (1 tonne = 1 kg) from rest to a speed of 75 m s 1. How much useful work must be done on the train to reach this speed? 3.4 1 6 J 6.8 1 6 J 3.4 1 9 J 6.8 1 9 J ULES 217 972/12/M/J/17
18 What is a correct derivation of the equation relating power, force and velocity? power = so power = work done time taken 11 and work done = force displacement force displacement time taken so power = force velocity power = so power = work done time taken force distance time taken so power = force velocity and work done = force distance power = work done time taken and work done = force displacement so power = force displacement time taken so power = force velocity power = work done time taken so power = force distance and work done = force distance time taken so power = force velocity 19 cable on a suspension bridge supports a weight of 19.3 1 5 N. This weight causes the cable to stretch by 47 mm. lorry crossing the bridge then increases the force on the cable to 23.3 1 5 N. The force-extension graph for the cable is shown. force / N 23.3 1 5 19.3 1 5 47 57 extension / mm What is the increase in strain energy in the cable when the lorry is crossing the bridge? 21 kj 23 kj 45 kj 66 kj ULES 217 972/12/M/J/17 [Turn over
12 2 What are the units of stress, strain and the Young modulus? stress strain Young modulus newton metre pascal newton no unit newton pascal metre newton pascal no unit pascal 21 rubber band is stretched and then relaxed to its original length. The diagram shows the force-extension graph for this process. force Q area X P R area Y O e extension s the force is increased, the curve follows the path OPQ to extension e. s the force is reduced, the curve follows the path QRO to return to zero extension. The area labelled X is between the curves OPQ and QRO. The area labelled Y is bounded by the curve QRO and the horizontal axis. Which statement about the process is correct? rea X is the energy which heats the band as it is stretched to extension e. (rea X + area Y) is the minimum energy required to stretch the band to extension e. rea X is the elastic potential energy stored in the band when it is stretched to extension e. (rea Y area X) is the net work done on the band during the process. ULES 217 972/12/M/J/17
13 22 The period of an electromagnetic wave is 1. ns. What are the frequency and wavelength of the wave? frequency / Hz wavelength / m 1. 3. 1 8 1. 1 6 3 1. 1 9.3 1. 1 12 3. 1 4 23 Which statement about progressive longitudinal waves is not correct? The oscillations of the particles are parallel to the direction of travel of the wave energy. They have a series of nodes and antinodes. They need a medium through which to travel. They transfer energy. 24 bicycle gear wheel is a disc with 5 teeth equally spaced around its edge, as shown. The gear wheel is rotated 1 times each second. springy strip of metal is vibrated by the rotating teeth. The metal strip produces a sound of frequency that is equal to the frequency of vibration of the strip. gear wheel fixed clamp teeth springy strip of metal The speed of sound in air is 33 m s 1. What is the wavelength of the emitted sound?.66 m 1.5 m 6.6 m 5 m ULES 217 972/12/M/J/17 [Turn over
14 25 n ambulance travels along a straight road at a speed of 3. m s 1. Its siren emits sound of frequency 2 Hz. The speed of sound in the air is 34 m s 1. The ambulance passes a man standing at the side of the road. What is the frequency of the sound heard by the man as the ambulance moves towards him and as the ambulance moves away from him? frequency heard as ambulance moves towards man / Hz frequency heard as ambulance moves away from man / Hz 182 218 184 219 218 182 219 184 26 Three different electromagnetic waves P, Q and R have the frequencies shown. frequency / Hz P 3 1 1 Q 3 1 13 R 6 1 14 Which row identifies P, Q and R? P Q R infra-red visible ultraviolet microwave infra-red visible ultraviolet X-ray gamma ray visible ultraviolet X-ray 27 Which row describes the oscillations of two moving particles in a stationary wave that are separated by a distance of half a wavelength? phase difference amplitude 9 different 9 same 18 different 18 same ULES 217 972/12/M/J/17
15 28 parallel beam of red light of wavelength 7 nm is incident normally on a diffraction grating that has 4 lines per millimetre. What is the total number of intensity maxima from the grating? 6 7 8 9 29 Two wave sources are oscillating in phase. Each source produces a wave of wavelength λ. The two waves from the sources meet at point X with a phase difference of 9. What is a possible difference in the distances from the two wave sources to point X? λ 8 λ 4 λ 2 λ 3 Which diagram best illustrates the electric field around a positive point charge? + + + + 31 The path of an electron with initial speed v in the uniform electric field between two parallel plates is shown. plates x The vertical deflection x is measured at the right-hand edge of the plates. The distance between the plates is halved. The potential difference between the plates remains the same. What will be the new deflection of the electron with the same initial speed v? x 2 x 2x 4x ULES 217 972/12/M/J/17 [Turn over
16 32 The current in a circuit component is 2. µ. How many electrons pass through the component each second? 1.25 1 13 1.25 1 16 1.25 1 19 1.25 1 25 33 The filament of a 24 V, 1 W electric lamp heats up from room temperature to its operating temperature. s it heats up, its resistance increases by a factor of 16. What is the resistance of the filament at room temperature? 36 Ω 58 Ω 1.5 kω 9.2 kω 34 Two wires have the same length and the same resistance. Wire X is made of a metal of resistivity 1.7 1 8 Ω m and wire Y is made of a metal of resistivity 5.6 1 8 Ω m. The diameter of wire X is.315 mm. What is the diameter of wire Y?.17 mm.33 mm.57 mm 1. mm 35 cell has a constant electromotive force. variable resistor is connected between the terminals of the cell. The resistance of the variable resistor is decreased. Which statement about the change of the cell s terminal potential difference (p.d.) is correct? The terminal p.d. is decreased because more work is done moving unit charge through the internal resistance of the cell. The terminal p.d. is decreased because the current in the variable resistor is decreased. The terminal p.d. is increased because more work is done moving unit charge through the variable resistor. The terminal p.d. is increased because the current in the variable resistor is increased. ULES 217 972/12/M/J/17
17 36 Four resistors are connected in a square as shown. Q 2 Ω 4 Ω P R 8 Ω 6 Ω S The resistance may be measured between any two junctions. etween which two junctions is the measured resistance greatest? P and Q Q and S R and S S and P 37 circuit is set up as shown. P V Q V The variable resistor is adjusted so that the ammeter reading decreases. How do the readings of the voltmeters change? reading on voltmeter P reading on voltmeter Q decreases decreases decreases increases increases decreases increases increases ULES 217 972/12/M/J/17 [Turn over
18 38 In a television programme to illustrate scientific models, a presenter fires a gun many times at a bale of hay. Two small cannon balls are embedded within the hay some distance apart from each other. The hay bale measures approximately 2 m 2 m 2 m and the cannon balls are made of iron, approximately spherical, and about 5 cm in diameter. What might the presenter be illustrating? α-particle scattering β decay conservation of momentum double-slit interference 39 certain nuclide, uranium-235, has nucleon number 235, proton number 92 and neutron number 143. ata on four other nuclides are given below. Which nuclide is an isotope of uranium-235? nucleon number proton number neutron number 235 91 144 236 92 144 237 94 143 238 95 143 4 uring β decay, which change takes place to the quark composition of the nucleus that emits the β particle, and which other particle is emitted? quark change other particle emitted down to up antineutrino down to up neutrino up to down antineutrino up to down neutrino ULES 217 972/12/M/J/17
19 LNK PGE ULES 217 972/12/M/J/17
2 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. To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the ambridge International Examinations opyright cknowledgements ooklet. This is produced for each series of examinations and is freely available to download at www.cie.org.uk after the live examination series. 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 217 972/12/M/J/17