Cambridge IGCSE Physics 0625 — 2016 Oct/Nov Paper 2 · Variant 3
0625/23/O/N/16 · 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 · The graph shows how the distance travelled by a vehicle changes with time
1 The graph shows how the distance travelled by a vehicle changes with time. S distance Q R P 0 0 time Which row describes the speed of the vehicle in each section of the graph? P to Q Q to R R to S A constant zero constant B constant zero decreasing C increasing constant decreasing D increasing zero constant
Mark scheme: A
Q2 · A stone falls freely from the top of a cliff
2 A stone falls freely from the top of a cliff. Air resistance may be ignored. Which graph shows how the acceleration of the stone varies with time as it falls? A B acceleration acceleration 0 0 0 time 0 time C D acceleration acceleration 0 0 0 time 0 time
Mark scheme: D
Q3 · The speed-time graph for an object is shown
3 The speed-time graph for an object is shown. speed X Y 10 m / s W Z 0 0 10 30 50 time / s Below are four statements about the acceleration of the object. Which statement is true? A The acceleration in the first 10 s is (10 ÷ 10) m / s2. B The acceleration increases between W and X. C The acceleration decreases between Y and Z. D The deceleration between Y and Z is (10 ÷ 50) m / s2.
Mark scheme: A
Q4 · An astronaut on the Moon weighs less than on Earth
4 An astronaut on the Moon weighs less than on Earth. What is the reason for this difference, and how does his mass on the Moon compare with his mass on Earth? reason for weight difference mass on Moon the Moon has a weaker A less than on Earth gravitational field the Moon has a weaker B same as on Earth gravitational field the Moon has a weaker C less than on Earth magnetic field the Moon has a weaker D same as on Earth magnetic field
Mark scheme: B
Q5 · The diagrams show an empty container, and the same container filled with liquid
5 The diagrams show an empty container, and the same container filled with liquid. The empty container has a mass of 120 g. When filled with the liquid, the total mass of the container and the liquid is 600 g. empty container container filled with liquid 120 g 600 g The volume of liquid in the container is 600 cm3. What is the density of the liquid? A 0.020 g / cm3 B 0.80 g / cm3 C 1.0 g / cm3 D 1.2 g / cm3
Mark scheme: B
Q6 · An object travels in a circular path at constant speed
6 An object travels in a circular path at constant speed. Which statement about the object is correct? A It has changing kinetic energy. B It has changing momentum. C It has constant velocity. D It is not accelerating.
Mark scheme: B
Q7 · Different loads are hung on a spring
7 Different loads are hung on a spring. The diagram shows the length of the spring with and without the loads attached. 20 cm 40 cm 65 cm 200 N 400 N What is the extension of the spring when the load is 400 N? A 5 cm B 25 cm C 40 cm D 45 cm
Mark scheme: D
Q8 · A vehicle of mass 900 kg is travelling with a velocity of 20 m / s
8 A vehicle of mass 900 kg is travelling with a velocity of 20 m / s. What is the momentum of the vehicle? A 45 kg m / s B 450 kg m / s C 18 000 kg m / s D 180 000 kg m / s
Mark scheme: C
Q9 · Which list contains only scalar quantities?
9 Which list contains only scalar quantities? A acceleration, energy, force, mass B acceleration, force, momentum, velocity C distance, energy, mass, speed D distance, momentum, speed, velocity
Mark scheme: C
More questions on Physical quantities and measurement techniques
Q10 · A ball is dropped onto a floor
10 A ball is dropped onto a floor. Its speed just before hitting the floor is 3.0 m / s. Which change would result in a speed of 6.0 m / s just before hitting the floor? Ignore any effects due to air resistance. A Drop the ball from double the height above the floor. B Drop the ball from four times the height above the floor. C Use a ball with double the mass. D Use a ball with four times the mass.
Mark scheme: B
Q11 · Which list contains only energy resources that derive their energy from the Sun?
11 Which list contains only energy resources that derive their energy from the Sun? A geothermal, nuclear, tidal B hydroelectric, water waves, wind C geothermal, hydroelectric, solar D nuclear, solar, water waves
Mark scheme: B
Q12 · A lamp has a power input of 5.0 W
12 A lamp has a power input of 5.0 W. It wastes 1.0 W of power heating the surroundings. What is the efficiency of the lamp? A 20% B 50% C 80% D 120%
Mark scheme: C
Q13 · A container is filled with liquid to a certain depth h
13 A container is filled with liquid to a certain depth h. container h liquid The pressure of the liquid at the bottom of the container depends on several factors. Which is one factor on which the pressure does not depend? A the strength of the Earth’s gravitational field B the density of the liquid C the depth of the liquid D the strength of the Earth’s magnetic field
Mark scheme: D
Q14 · Which diagram best represents the movement of a smoke particle displaying Brownian motion?
14 Which diagram best represents the movement of a smoke particle displaying Brownian motion? A B smoke smoke particle particle C D smoke particle smoke particle
Mark scheme: D
Q15 · The volume of a gas is measured at different pressures
15 The volume of a gas is measured at different pressures. The pressure p and the volume V of the gas are found to be related by the equation: pV = constant. Which quantities are kept constant and which quantities change? density of gas mass of gas temperature of gas A v v x key B v x v ¥ = constant Cc x v v X = changed D x x Jv
Mark scheme: C
Q16 · A piece of melting ice at 0 °C and a beaker of boiling water are both in a laboratory
16 A piece of melting ice at 0 °C and a beaker of boiling water are both in a laboratory. The laboratory is at 20 °C. boiling water melting ice Bunsen burner heating water What is happening to the temperature of the melting ice and what is happening to the temperature of the boiling water? temperature of temperature of melting ice boiling water A constant constant B constant increasing C increasing constant D increasing increasing
Mark scheme: A
Q17 · A scientist has two thermometers available: a liquid-in-glass thermometer and a…
17 A scientist has two thermometers available: a liquid-in-glass thermometer and a thermocouple thermometer. Which thermometer is better for measuring a very high temperature, and which thermometer is better for measuring a rapidly varying temperature? very high temperature rapidly varying temperature A liquid-in-glass liquid-in-glass B liquid-in-glass thermocouple C thermocouple liquid-in-glass D thermocouple thermocouple
Mark scheme: D
Q18 · A copper container of mass 0.20 kg contains 0.10 kg of water
18 A copper container of mass 0.20 kg contains 0.10 kg of water. The specific heat capacity of copper is 385 J / (kg °C) and the specific heat capacity of water is 4200 J / (kg °C). How much energy, in joules, is needed to raise the temperature of the copper container and the water by 10 °C? A (0.20 × 385 × 10) – (0.10 × 4200 × 10) B (0.20 × 385 × 10) + (0.10 × 4200 × 10) 4200 + 385 C (0.10 + 0.20) × × 10 2 D (0.10 + 0.20) × (4200 + 385) × 10
Mark scheme: B
Q19 · The diagrams show four spherical objects of the same size
19 The diagrams show four spherical objects of the same size. Two of the objects are white and two are black. Two of the objects are at the same high temperature and two are at the same low temperature. Which object emits infra-red radiation at the greatest rate? A B C D high high low low temperature temperature temperature temperature
Mark scheme: B
Q20 · A man is talking at the side of a house
20 A man is talking at the side of a house. He can be heard by a woman at the front of the house even though she cannot see him. What is the explanation for this? A Sound waves are longitudinal and light waves are transverse. B Sound waves are transverse and light waves are longitudinal. C The sound waves have a long wavelength and the light waves have short wavelength. D The sound waves have a short wavelength and the light waves have long wavelength.
Mark scheme: C
Q21 · An image is formed by a plane mirror
21 An image is formed by a plane mirror. A second image is formed by a lens used as a magnifying glass. Which row states the nature of each of these images? plane mirror magnifying glass A real real B real virtual C virtual real D virtual virtual
Mark scheme: D
Q22 · The speed of light in air is 3.0 × 108 m / s
22 The speed of light in air is 3.0 × 108 m / s. The critical angle for light in a transparent plastic material placed in air is 37°. What is the speed of light in the plastic material? A 1.8 × 108 m / s B 2.4 × 108 m / s C 3.8 × 108 m / s D 5.0 × 108 m / s
Mark scheme: A
Q23 · Which description applies to infra-red radiation?
23 Which description applies to infra-red radiation? A longitudinal and electromagnetic B longitudinal but not electromagnetic C transverse and electromagnetic D transverse but not electromagnetic
Mark scheme: C
Q24 · A girl notices that, when she shouts into a cave, she hears an echo
24 A girl notices that, when she shouts into a cave, she hears an echo. Which wave property causes the echo? A diffraction B dispersion C reflection D refraction
Mark scheme: C
Q25 · A man stands 110 m from a high wall
25 A man stands 110 m from a high wall. He makes a short, sharp sound and then hears an echo from the wall. The speed of sound in air is 330 m / s. How long after making the sound does the man hear the echo? A 0.33 s B 0.67 s C 1.5 s D 3.0 s
Mark scheme: B
Q26 · A student suggests three methods for demagnetising a piece of steel
26 A student suggests three methods for demagnetising a piece of steel. 1 placing it in an east-west direction and hammering it hard 2 placing it in an east-west direction and heating it until red hot 3 removing it slowly from a coil carrying alternating current Which of the methods will demagnetise the piece of steel? A 1 only B 2 only C 3 only D 1, 2 and 3
Mark scheme: D
Q27 · In two separate experiments, a magnet is brought near to an unmagnetised iron bar
27 In two separate experiments, a magnet is brought near to an unmagnetised iron bar. This causes the bar to become magnetised. experiment 1 N magnet S X iron bar experiment 2 S magnet N iron bar Y Which magnetic pole is induced at X and at Y? pole induced at X pole induced at Y A N N B N S C S N D S S
Mark scheme: A
Q28 · A student holds a rod in his hand
28 A student holds a rod in his hand. cloth hand rod He rubs the rod with a cloth. The rod gains a positive charge. Of which material could the rod be made, and which transfer of charge has happened? material of rod transfer of charge A metal negative charge from rod to cloth B metal positive charge from cloth to rod C plastic negative charge from rod to cloth D plastic positive charge from cloth to rod
Mark scheme: C
Q29 · The diagram shows a lamp in a circuit
29 The diagram shows a lamp in a circuit. P Which change to the circuit would increase the current in the lamp? A adding another resistor in parallel with the one in the circuit B adding another resistor in series with the one in the circuit C decreasing the electromotive force (e.m.f.) of the battery in the circuit D moving the lamp to point P in the circuit
Mark scheme: A
Q30 · The graph shows the relationship between the current in a circuit component and the…
30 The graph shows the relationship between the current in a circuit component and the potential difference (p.d.) across it. The graph has a straight section and a curved section. current 0 0 p.d. What happens to the resistance of the component in these two sections as the current increases? straight section curved section A resistance increases resistance decreases B resistance increases resistance increases C no change in resistance resistance decreases D no change in resistance resistance increases
Mark scheme: D
Q31 · In the circuit shown there is a current of 10 A
31 In the circuit shown there is a current of 10 A. How much charge passes through the resistor in 2.0 minutes? A 0.083 C B 5 C C 20 C D 1200 C
Mark scheme: D
Q32 · The four circuits shown each contain four diodes
32 The four circuits shown each contain four diodes. In which circuit is the direction of the current in the resistor always from the red terminal to the black terminal? A B 12 V 12 V red black red black terminal terminal terminal terminal C D 12 V 12 V red black red black terminal terminal terminal terminal
Mark scheme: A
Q33 · The diagram shows a potential divider
33 The diagram shows a potential divider. 6 V 0 V When brighter light falls on the light-dependent resistor (LDR), its resistance changes. What happens to the resistance of the LDR and what happens to the current in it? resistance of LDR current in LDR A decreases decreases B decreases increases C increases decreases D increases increases
Mark scheme: B
Q34 · The diagram shows two logic gates connected together
34 The diagram shows two logic gates connected together. low (0) P Q low (0) The two inputs are both low (0). What are the logic states at P and at Q? P Q A high (1) high (1) B high (1) low (0) C low (0) high (1) D low (0) low (0)
Mark scheme: B
Q35 · Two electrical appliances are connected to the mains supply
35 Two electrical appliances are connected to the mains supply. The cable connected to one appliance includes an earth wire. The cable connected to the second appliance does not need an earth wire. What is a reason for this difference? A One appliance has a metal case, but the other appliance does not. B One appliance is fitted with a fuse, but the other appliance is not. C One appliance is fitted with a switch, but the other appliance is not. D One appliance needs more current than the other appliance.
Mark scheme: A
Q36 · An electric current can produce a heating effect and a magnetic effect
36 An electric current can produce a heating effect and a magnetic effect. Which row shows the effect that a relay uses and one application of a relay? effect used by a relay one application of a relay A heating effect allowing a small current to switch on a large current B heating effect changing the voltage of an a.c. supply C magnetic effect allowing a small current to switch on a large current D magnetic effect changing the voltage of an a.c. supply
Mark scheme: C
Q37 · Which particle is absorbed by a nucleus to cause nuclear fission?
37 Which particle is absorbed by a nucleus to cause nuclear fission? A a neutron B a proton C an α-particle D a β-particle
Mark scheme: A
Q38 · An α-particle enters a uniform magnetic field directed out of the page
38 An α-particle enters a uniform magnetic field directed out of the page. uniform magnetic field out of the page α-particle In which direction is the α-particle deflected by the field? A into the page B out of the page C to the left D to the right
Mark scheme: D
Q39 · Radioactive source S emits α-particles, β-particles and γ-rays
39 Radioactive source S emits α-particles, β-particles and γ-rays. A detector is placed 5 cm away from S. A thin sheet of paper is placed as shown in the diagram. thin sheet of paper S detector 5 cm Which emissions from the source can be detected? A α-particles and β-particles only B α-particles and γ-rays only C β-particles and γ-rays only D α-particles, β-particles and γ-rays
Mark scheme: C
Q40 · Uranium-238 is radioactive and decays to thorium-234 by the emission of a particle
40 Uranium-238 is radioactive and decays to thorium-234 by the emission of a particle. 238 U → 234 Th + particle 92 90 Which particle is emitted in this process? A an α-particle B a β-particle C a neutron D a proton
Mark scheme: A
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.
4Motion4Electrical quantities3Energy, work and power3Sound3Thermal properties and temperature3Electromagnetic effects2Kinetic particle model of matter2Light2Radioactivity2Simple phenomena of magnetism2Density1Electrical safety1Electromagnetic spectrum1Forces1Mass and weight1Momentum1Physical quantities and measurement techniques1Pressure1The nuclear model of the atom1Transfer of thermal energy1What you needed in this session
Cambridge’s own grade thresholds for 2016 Oct/Nov, Paper 2 · Variant 3. A higher threshold means an easier paper — the bar moves with how the cohort did.