Cambridge IGCSE Physics 0625 — 2015 May/June Paper 1 · Variant 3
0625/13/M/J/15 · 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 paper20 pages
Mark scheme2 pages
Answers below. Sit the paper first if you are practising.
Questions as text
Q1 · A cook wants to prepare some food to be cooked by 1.15 p.m
1 A cook wants to prepare some food to be cooked by 1.15 p.m. He uses an oven with an automatic timer that can be set to switch on and off at certain times. The oven needs to be switched on for 2 hours 10 minutes. At which time does the oven need to switch on? A 11.05 a.m. B 11.25 a.m. C 3.05 p.m. D 3.25 p.m.
Mark scheme: A
More questions on Physical quantities and measurement techniques
Q2 · The speed-time graph shows the motion of a car
2 The speed-time graph shows the motion of a car. Q R speed P 0 0 time Which row describes the motion? between P and Q between Q and R A accelerating moving at constant speed B accelerating not moving C moving at constant speed decelerating D moving at constant speed not moving
Mark scheme: A
Q3 · A car travels 100 km
3 A car travels 100 km. The journey takes two hours. The highest speed of the car is 80 km / h, and the lowest speed is 40 km / h. What is the average speed for the journey? A 40 km / h B 50 km / h C 60 km / h D 120 km / h
Mark scheme: B
Q4 · Weight is an example of which quantity?
4 Weight is an example of which quantity? A acceleration B force C mass D pressure
Mark scheme: B
Q5 · A metal block has the dimensions shown
5 A metal block has the dimensions shown. Its mass is 1000 g. 5 cm 10 cm 2 cm What is the density of the metal? 5 × 10 A g / cm3 1000 × 2 2 × 5 × 10 B g / cm3 1000 1000 × 2 C g / cm3 5 × 10 1000 D g / cm3 2 × 5 × 10
Mark scheme: D
Q6 · A car travels along a horizontal road at a constant speed
6 A car travels along a horizontal road at a constant speed. Three horizontal forces act on the car. The diagram shows two of these three forces. direction of motion forwards air resistance force from engine 300 N 1500 N What is the size and the direction of the third horizontal force acting on the car? A 1200 N backwards B 1200 N forwards C 1800 N backwards D 1800 N forwards
Mark scheme: A
Q7 · The extension-load graph for a spring is shown
7 The extension-load graph for a spring is shown. The unstretched length of the spring is 17.0 cm. 3 extension / cm 2 1 0 0 1 2 3 4 load / N When an object is hung from the spring, the length of the spring is 19.2 cm. What is the weight of the object? A 1.4 N B 1.6 N C 2.6 N D 3.0 N
Mark scheme: D
Q8 · Tocalculate the power produced by a force, the size of the force must be known
8 Tocalculate the power produced by a force, the size of the force must be known. What else needs to be known to calculate the power? the distance the force moves the object the time for which the force acts on the object 0 0O DW > v v x x v x v x key J/ = needed X = not needed
Mark scheme: A
Q9 · A cyclist travels down a hill from rest at point X, without pedalling
9 A cyclist travels down a hill from rest at point X, without pedalling. The cyclist applies his brakes and the cycle stops at point Y. X hill Y Which energy changes have taken place between X and Y? A gravitational potential → kinetic → thermal (heat) B gravitational potential → thermal (heat) → kinetic C kinetic → gravitational potential → thermal (heat) D kinetic → thermal (heat) → gravitational potential
Mark scheme: A
Q10 · The diagram shows a manometer with one side connected to a gas cylinder and the other…
10 The diagram shows a manometer with one side connected to a gas cylinder and the other side open to the atmosphere. gas cylinder liquid Which conclusion can be made using only the information from liquid levels in the manometer? A The density of the gas is less than the density of air. B The density of the gas is greater than the density of air. C The pressure of the gas is less than atmospheric pressure. D The pressure of the gas is greater than atmospheric pressure.
Mark scheme: D
Q11 · The diagram shows a solid block resting on a bench
11 The diagram shows a solid block resting on a bench. The dimensions of the block are shown. 40 cm 20 cm Q R bench 80 cm P On which labelled surface should the block rest to produce the smallest pressure on the bench? A P B Q C R D any of P, Q or R
Mark scheme: A
Q12 · Small smoke particles suspended in air are viewed through a microscope
12 Small smoke particles suspended in air are viewed through a microscope. The smoke particles move randomly. What does this show? A The air consists of fast-moving molecules. B The pressure of the air is increasing. C There are convection currents in the air. D The temperature of the air is increasing.
Mark scheme: A
Q13 · Molecules escape from a liquid during evaporation
13 Molecules escape from a liquid during evaporation. The temperature of the remaining liquid changes. Which molecules escape and how does the temperature change? temperature of molecules escaping remaining liquid A least energetic decreases B least energetic increases C most energetic decreases D most energetic increases
Mark scheme: C
Q14 · The thermometer in the diagram has no scale
14 The thermometer in the diagram has no scale. stem bulb Where must the bulb be placed so that 0 °C can be marked on the stem? A in a freezer B in pure boiling water C in pure cold water D in pure melting ice
Mark scheme: D
Q15 · A solid is heated from room temperature
15 A solid is heated from room temperature. The graph shows how its temperature changes with time as it is heated constantly. S T temperature Q R room temperature P 0 0 time Between which labelled points on the graph is the substance partly solid and partly liquid? A between P and Q B between Q and R C between R and S D between S and T
Mark scheme: B
Q16 · One method of heat transfer involves the energy travelling at a much greater speed than…
16 One method of heat transfer involves the energy travelling at a much greater speed than in other methods. What is the name of this method? A conduction B convection C evaporation D radiation
Mark scheme: D
Q17 · A cupboard is placed in front of a heater
17 A cupboard is placed in front of a heater. Air can move through a gap under the cupboard. wall cupboard heater air moves through gap floor Which row describes the temperature, and the direction of movement, of the air in the gap? air temperature air direction A cool away from the heater B cool towards the heater C warm away from the heater D warm towards the heater
Mark scheme: B
Q18 · What is the frequency of a wave?
18 What is the frequency of a wave? A the distance that a wavefront travels every second B the distance from one wavefront to the next C the number of wavefronts produced per second D the time taken for a wavefront to pass a certain point
Mark scheme: C
Q19 · The diagrams represent water waves in a tank
19 The diagrams represent water waves in a tank. Which diagram represents a wave that changes speed? A B C D barrier barrier barrier deeper shallower water water
Mark scheme: D
Q20 · Which diagram shows how the light from a candle is reflected by a mirror, and shows the…
20 Which diagram shows how the light from a candle is reflected by a mirror, and shows the position of the image formed? A B image of image of candle candle candle candle eye eye mirror mirror C D candle candle image of candle eye image of eye candle mirror mirror
Mark scheme: A
Q21 · Radiation from the Sun is dispersed by a prism
21 Radiation from the Sun is dispersed by a prism. The prism does not absorb any of the radiation. Four identical thermometers are placed, one at each of the labelled positions. In which position does the thermometer show the greatest rise in temperature? prism radiation from the Sun A B red light C violet light D
Mark scheme: A
Q22 · A scientist tries to direct a ray of light in a glass block so that no light escapes from…
22 A scientist tries to direct a ray of light in a glass block so that no light escapes from the top of the block. However, some light does escape. light escaping from top of block top of block glass block X ray of light The scientist changes angle X and stops the light escaping from the top. Which row in the table describes the change to angle X and the name of the effect produced? change to angle X name of effect produced A decrease total internal reflection B decrease total internal refraction C increase total internal reflection D increase total internal refraction
Mark scheme: C
Q23 · The frequency of a musical note is increased
23 The frequency of a musical note is increased. A student hearing the sound detects an increase in which property? A loudness of the sound B pitch of the sound C speed of the sound wave D wavelength of the sound wave
Mark scheme: B
Q24 · A man holding a starting pistol stands 640 m away from a spectator
24 A man holding a starting pistol stands 640 m away from a spectator. 640 m spectator The spectator hears the sound of the starting pistol 2.0 s after seeing the flash from the pistol. Using this information, what is the speed of sound in air? A 160 m / s B 320 m / s C 640 m / s D 1280 m / s
Mark scheme: B
Q25 · Which action will demagnetise a magnetised piece of steel?
25 Which action will demagnetise a magnetised piece of steel? A Cool it in a freezer for several hours. B Hit it repeatedly with a hammer. C Put it in a coil carrying a direct current (d.c.). D Put it near an unmagnetised piece of iron.
Mark scheme: B
Q26 · An electromagnet with a soft-iron core is connected to a battery and an open switch
26 An electromagnet with a soft-iron core is connected to a battery and an open switch. The soft-iron core is just above some small soft-iron nails. electromagnet soft-iron core soft-iron nails The switch is now closed, left closed for a few seconds, and then opened. What do the soft-iron nails do as the switch is closed, and what do they do when the switch is then opened? as switch is closed as switch is opened A nails jump up nails fall down B nails jump up nails stay up C nails stay down nails jump up D nails stay down nails stay down
Mark scheme: A
Q27 · What is the unit of electromotive force (e.m.f.)?
27 What is the unit of electromotive force (e.m.f.)? A ampere B newton C ohm D volt
Mark scheme: D
Q28 · Which sample of copper wire has the greatest electrical resistance?
28 Which sample of copper wire has the greatest electrical resistance? length of wire / m diameter of wire / mm A 1.0 2.0 B 1.0 4.0 C 10 2.0 D 10 4.0
Mark scheme: C
Q29 · The circuit diagram shows a 4.0 Ω resistor and an 8.0 Ω resistor connected to a 6.0 V…
29 The circuit diagram shows a 4.0 Ω resistor and an 8.0 Ω resistor connected to a 6.0 V battery. 6.0 V 4.0 Ω 8.0 Ω What is the current in the 8.0 Ω resistor? A 0 A B 0.50 A C 0.75 A D 1.0 A
Mark scheme: C
Q30 · The diagram shows a circuit which includes an uncharged capacitor and a switch
30 The diagram shows a circuit which includes an uncharged capacitor and a switch. Y X switch capacitor The switch can be moved between position X and position Y. What happens to the capacitor when the switch is moved to position X, and what happens when the switch is then moved to position Y? switch at X switch at Y A capacitor charges capacitor charges B capacitor charges capacitor discharges C capacitor discharges capacitor charges D capacitor discharges capacitor discharges
Mark scheme: B
Q31 · Which component is represented by this circuit symbol?
31 Which component is represented by this circuit symbol? A a bell B a fuse C a relay D a transformer
Mark scheme: C
Q32 · The diagram shows a 10 Ω resistor and a 20 Ω resistor connected in a potential divider…
32 The diagram shows a 10 Ω resistor and a 20 Ω resistor connected in a potential divider circuit. 10 Ω 12.0 V 20 Ω V What is the reading on the voltmeter? A 4.0 V B 6.0 V C 8.0 V D 12.0 V
Mark scheme: C
Q33 · In the circuit shown, only one of the fuses has blown, but none of the lamps is lit
33 In the circuit shown, only one of the fuses has blown, but none of the lamps is lit. Which fuse has blown? power supply A B C D
Mark scheme: A
Q34 · A student investigates the force on a bar magnet placed near a current-carrying coil
34 A student investigates the force on a bar magnet placed near a current-carrying coil. She carries out three different experiments. N S N S S N magnet attracted to coil experiment 1 experiment 2 experiment 3 In experiment 1, the magnet is attracted to the coil. Which row shows what happens in the other two experiments? experiment 2 experiment 3 A magnet attracted magnet attracted B magnet attracted magnet repelled C magnet repelled magnet attracted D magnet repelled magnet repelled
Mark scheme: C
Q35 · Which diagram represents the voltage output of a simple a.c
35 Which diagram represents the voltage output of a simple a.c. generator? A B voltage voltage 0 0 time time C D voltage voltage 0 0 time time
Mark scheme: B
Q36 · A transformer has 400 turns on its secondary coil
36 A transformer has 400 turns on its secondary coil. An input voltage of 12 V is applied to the primary coil, and an output voltage of 120 V is induced across the secondary coil. primary coil secondary coil 400 turns input voltage output voltage 12 V 120 V How many turns are on the primary coil of the transformer? A 12 B 40 C 400 D 4000
Mark scheme: B
Q37 · The diagram shows a cathode-ray tube
37 The diagram shows a cathode-ray tube. cathode-rays cathode anode Which electrode should be heated, and which electrode should be positive? heated electrode positive electrode A anode anode B anode cathode C cathode anode D cathode cathode
Mark scheme: C
Q38 · Α, β and γ-radiations are emitted by radioactive substances
38 α, β and γ-radiations are emitted by radioactive substances. Which statement is correct? A α-radiation consists of charged particles and is the most highly ionising radiation. B β-radiation consists of charged particles and is the most penetrating radiation. C β-radiation consists of uncharged particles and is the least highly ionising radiation. D γ-radiation consists of uncharged particles and is the least penetrating radiation.
Mark scheme: A
Q39 · The nucleus of an americium atom contains 146 neutrons and 95 protons
39 The nucleus of an americium atom contains 146 neutrons and 95 protons. It decays by emitting an α-particle. How many neutrons and how many protons remain in the nucleus when this form of americium decays? number of neutrons number of protons remaining remaining A 142 93 B 142 95 C 144 93 D 144 95
Mark scheme: C
Q40 · Which statement is correct for the nucleus of any atom?
40 Which statement is correct for the nucleus of any atom? A The nucleus contains electrons, neutrons and protons. B The nucleus contains the same number of protons as neutrons. C The nucleus has a total charge of zero. D The nucleus is very small compared with the size of the atom.
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.
4Electromagnetic effects3Electrical quantities2Energy, work and power2Forces2General properties of waves2Kinetic particle model of matter2Light2Motion2Pressure2Radioactivity2Simple phenomena of magnetism2Sound2The nuclear model of the atom2Thermal properties and temperature2Transfer of thermal energy2Density1Electrical safety1Electromagnetic spectrum1Mass and weight1Physical quantities and measurement techniques1What you needed in this session
Cambridge’s own grade thresholds for 2015 May/June, Paper 1 · Variant 3. A higher threshold means an easier paper — the bar moves with how the cohort did.