Cambridge IGCSE Physics 0625 — 2019 Oct/Nov Paper 2 · Variant 2
0625/22/O/N/19 · 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 paper16 pages
Mark scheme3 pages
Answers below. Sit the paper first if you are practising.
Questions as text
Q1 · A student measures the dimensions of a cylindrical glass beaker
1 A student measures the dimensions of a cylindrical glass beaker. For which measurement should she use a micrometer screw gauge? A circumference of the beaker B diameter of the beaker C height of the beaker D thickness of the glass wall of the beaker
Mark scheme: D
More questions on Physical quantities and measurement techniques
Q2 · The graph shows how the speed of a car varies during part of a journey
2 The graph shows how the speed of a car varies during part of a journey. 20.0 speed m / s 15.0 10.0 5.0 0 0 2.0 4.0 6.0 8.0 10.0 12.0 time / s What is the acceleration of the car between 6.0 s and 10.0 s? A 0.50 m / s2 B 0.80 m / s2 C 1.25 m / s2 D 1.50 m / s2
Mark scheme: C
Q3 · A car travels at an average speed of 60 km / h for 15 minutes
3 A car travels at an average speed of 60 km / h for 15 minutes. How far does the car travel in 15 minutes? A 4.0 km B 15 km C 240 km D 900 km
Mark scheme: B
Q4 · A box is placed on the ground
4 A box is placed on the ground. An upward force of 15 N is needed to lift the box at constant speed. Which row correctly describes the box? mass of the box weight of the box A 1.5 kg 15 N B 15 N 1.5 kg C 15 N 150 kg D 150 kg 15 N
Mark scheme: A
Q5 · The table gives the mass and the volume of three objects P, Q and R
5 The table gives the mass and the volume of three objects P, Q and R. object mass / g volume / cm3 P 23 36 Q 170 720 R 240 340 Which objects can float in a liquid of density 0.85 g / cm3? A P and Q only B P and R only C Q and R only D P, Q and R
Mark scheme: D
Q6 · A hook is used to lift a metal plate, as shown
6 A hook is used to lift a metal plate, as shown. 100 N hook 50 cm 40 cm pivot metal plate W An upward force of 100 N is needed to lift the metal plate about the pivot, as shown. What is the weight W of the metal plate? A 80 N B 100 N C 180 N D 225 N
Mark scheme: C
Q7 · What is the unit of the moment of a force?
7 What is the unit of the moment of a force? A N B N / kg C N / m D N m
Mark scheme: D
Q8 · A ship travels due North through still water at a speed of 20 m / s
8 A ship travels due North through still water at a speed of 20 m / s. It enters a channel where there is a current in the water from West to East. The speed of the current is 20 m / s. Which diagram shows the resultant velocity v of the ship? A B N v v W E 20 m / s 20 m / s S 20 m / s 20 m / s C D 20 m / s v 20 m / s v 20 m / s 20 m / s
Mark scheme: C
Q9 · A ball is at rest on the ground
9 A ball is at rest on the ground. A boy kicks the ball. The boy’s boot is in contact with the ball for 0.040 s. The average force on the ball is 200 N. The ball leaves the boy’s boot with a speed of 20 m / s. Which row gives the impulse of the boot on the ball and the average acceleration of the ball? impulse on ball average acceleration of ball N s m / s2 A 8 0.8 B 8 500 C 5000 0.8 D 5000 500
Mark scheme: B
Q10 · An object P of mass 80 g collides with another object Q of mass 40 g
10 An object P of mass 80 g collides with another object Q of mass 40 g. After the collision, P and Q stick together and then travel on together. Before the collision, P is travelling at a speed of 6.0 m / s and Q is at rest. What is the speed of P and Q after the collision? A 2.0 m / s B 3.0 m / s C 4.0 m / s D 6.0 m / s
Mark scheme: C
Q11 · Brakes are used to slow down a moving car
11 Brakes are used to slow down a moving car. Into which form of energy is most of the kinetic energy converted as the car slows down? A chemical B elastic C thermal D sound
Mark scheme: C
Q12 · A box of mass 8.0 kg is lifted from the ground and placed on a shelf
12 A box of mass 8.0 kg is lifted from the ground and placed on a shelf. The box gains 100 J of potential energy. The box falls off the shelf. Air resistance can be ignored. At what speed does the box hit the ground? A 3.5 m / s B 5.0 m / s C 25 m / s D 28 m / s
Mark scheme: B
Q13 · A car is moving along a straight horizontal road
13 A car is moving along a straight horizontal road. The car has 1.6 MJ of kinetic energy. The car accelerates for 20 s until the kinetic energy of the car increases to 2.5 MJ. What is the minimum average power developed by the car engine for this acceleration? A 45 W B 205 W C 45 kW D 205 kW
Mark scheme: C
Q14 · A drawing pin (thumb tack) has a sharp point at one end and a flat surface at the other…
14 A drawing pin (thumb tack) has a sharp point at one end and a flat surface at the other end. sharp point flat surface The pin is pushed into a wooden board. How do the pressure and the force at the sharp point compare with the pressure and the force on the flat surface? force at the sharp point pressure at the sharp point A greater than on the flat surface greater than on the flat surface B greater than on the flat surface less than on the flat surface C the same as on the flat surface greater than on the flat surface D the same as on the flat surface less than on the flat surface
Mark scheme: C
Q15 · The density of mercury is 13 600 kg / m3
15 The density of mercury is 13 600 kg / m3. What is the pressure at the bottom of a column of mercury that has a height of 75.0 cm? A 1.02 × 104 Pa B 1.02 × 105 Pa C 1.02 × 106 Pa D 1.02 × 107 Pa
Mark scheme: B
Q16 · Which row describes the arrangement and the motion of the molecules in a gas?
16 Which row describes the arrangement and the motion of the molecules in a gas? arrangement motion A far apart move freely B far apart vibrate only C tightly packed move freely D tightly packed vibrate only
Mark scheme: A
Q17 · A bubble of air of volume 3.0 mm3 is under water
17 A bubble of air of volume 3.0 mm3 is under water. The bubble is at a depth where the pressure of the air inside the bubble is four times atmospheric pressure. The temperature of the air in the bubble stays the same as it rises to the surface. What is the volume of the air in the bubble as it reaches the surface? A 3.0 mm3 B 9.0 mm3 C 12 mm3 D 15 mm3
Mark scheme: C
Q18 · The same quantity of thermal energy is supplied to each of four blocks
18 The same quantity of thermal energy is supplied to each of four blocks. Each block is made from a different material. Which block has the greatest thermal capacity? A B C D temperature temperature temperature temperature increase is increase is increase is increase is 1 °C 4 °C 2 °C 3 °C
Mark scheme: A
Q19 · A liquid turns into a gas
19 A liquid turns into a gas. This occurs only at one particular temperature, and the change happens throughout the liquid. What is this process called? A boiling B condensation C evaporation D fusion
Mark scheme: A
Q20 · In a cold country, a bicycle has been left outside all night
20 In a cold country, a bicycle has been left outside all night. The cyclist finds the plastic hand grips feel less cold to the touch than the steel handlebars. Which row correctly describes the temperature and the property of the two materials? the temperature of the two materials the property of the two materials A the temperature of the steel is the plastic is a better thermal much lower than that of the plastic conductor than the steel B the temperature of the steel is the steel is a better thermal much lower than that of the plastic conductor than the plastic C the steel and the plastic are the plastic is a better thermal both at the same temperature conductor than the steel D the steel and the plastic are the steel is a better thermal both at the same temperature conductor than the plastic
Mark scheme: D
Q21 · The diagram shows a tent made from a new material
21 The diagram shows a tent made from a new material. new material What type of material should the tent be made of to reflect the radiant energy from the Sun? material material texture surface colour A dull black B dull white C shiny black D shiny white
Mark scheme: D
Q22 · A large hill blocks the direct path between a transmitter of radio waves and a receiver…
22 A large hill blocks the direct path between a transmitter of radio waves and a receiver, as shown. transmitter hill receiver The receiver picks up the signal from the transmitter even though the radio waves do not travel through the hill. Which row is correct? A possible way A stronger signal is for this to happen is received using A diffraction round the hill. longer wavelengths. B diffraction round the hill. shorter wavelengths. C refraction round the hill. longer wavelengths. D refraction round the hill. shorter wavelengths.
Mark scheme: A
Q23 · A ray of light is incident on a plane mirror
23 A ray of light is incident on a plane mirror. A student measures the angle of incidence i and the angle of reflection r. incident i r reflected ray ray The student varies the angle of incidence and then plots a graph of r against i. What does the graph look like? A B C D r r r r 0 0 0 0 0 i 0 i 0 i 0 i
Mark scheme: C
Q24 · What is monochromatic light?
24 What is monochromatic light? A light of a single amplitude B light of a single frequency C light of more than one colour D light which travels with constant velocity
Mark scheme: B
Q25 · The diagram shows the electromagnetic spectrum
25 The diagram shows the electromagnetic spectrum. radio γ-rays X-rays ultraviolet visible light infrared microwaves waves increasing ...................... A word is missing from the label below the spectrum. Which word is missing? A amplitude B frequency C speed D wavelength
Mark scheme: D
Q26 · Which row gives a possible set of values for the speed of sound in ice, in water and in…
26 Which row gives a possible set of values for the speed of sound in ice, in water and in steam? speed of sound speed of sound speed of sound in ice in water in steam m/s m/s m/s A 500 1500 4000 B 1500 4000 500 C 4000 500 1500 D 4000 1500 500
Mark scheme: D
Q27 · A steel bar is placed in an East-West direction for it to be demagnetised
27 A steel bar is placed in an East-West direction for it to be demagnetised. No other magnet is nearby. Which method is not suitable? A Hammering the bar. B Heating the bar to a very high temperature. C Slowly taking the bar out of a coil that carries an alternating current. D Slowly taking the bar out of a coil that carries a direct current.
Mark scheme: D
Q28 · A plastic rod is rubbed with a dry cloth
28 A plastic rod is rubbed with a dry cloth. The rod becomes positively charged. Why has the rod become positively charged? A It has gained electrons. B It has gained neutrons. C It has lost electrons. D It has lost neutrons.
Mark scheme: C
Q29 · There is a current of 2.0 A in a resistor for 30 s
29 There is a current of 2.0 A in a resistor for 30 s. The potential difference (p.d.) across the resistor is 12 V. How much energy is transferred in the resistor? A 1.25 J B 5.0 J C 180 J D 720 J
Mark scheme: D
Q30 · Identical resistors are connected together to form arrangements X, Y and Z
30 Identical resistors are connected together to form arrangements X, Y and Z. X Y Z What is the correct order of the resistances of the arrangements from the largest to the smallest? A X → Y → Z B Y → X → Z C Z → X → Y D Z → Y → X
Mark scheme: D
Q31 · Resistors of 1.0 Ω, 2.0 Ω and 3.0 Ω are connected in parallel with a cell
31 Resistors of 1.0 Ω, 2.0 Ω and 3.0 Ω are connected in parallel with a cell. Which statement is correct? A The current in each resistor is different but the potential difference (p.d.) across each resistor is the same. B The current in each resistor is the same but the potential difference across each resistor is different. C The potential difference across the 3.0 Ω is greater than the potential difference across the 1.0 Ω resistor. D The sum of the potential differences across each resistor is equal to the electromotive force (e.m.f.) of the cell.
Mark scheme: A
Q32 · The diagram shows a circuit component
32 The diagram shows a circuit component. What is it used for? A to allow current in one direction only B to change the direction of the current C to emit light when there is a current D to increase the size of the current
Mark scheme: A
Q33 · Which single logic gate behaves the same as the combination of logic gates shown?
33 Which single logic gate behaves the same as the combination of logic gates shown? A AND B NOR C NOT D OR
Mark scheme: A
Q34 · Where must a fuse be connected in a mains electric circuit?
34 Where must a fuse be connected in a mains electric circuit? A the earth wire only B the live wire only C the neutral wire only D the live wire and the earth wire
Mark scheme: B
Q35 · The N-pole of a magnet is moved into a coil of wire connected to a galvanometer
35 The N-pole of a magnet is moved into a coil of wire connected to a galvanometer. coil S N The needle of the galvanometer moves. Which situation must give a smaller galvanometer reading? A Use a coil with fewer turns and a stronger magnet. B Use a coil with fewer turns and a weaker magnet. C Use a coil with more turns and a stronger magnet. D Use a coil with more turns and a weaker magnet.
Mark scheme: B
Q36 · A step-down transformer is 100% efficient
36 A step-down transformer is 100% efficient. It has an input voltage of 240 V a.c. and an output voltage of 60 V a.c. The current in the primary coil is 0.50 A. What is the current in the secondary coil? A 0.13 A B 0.50 A C 2.0 A D 8.0 A
Mark scheme: C
Q37 · The diagrams show the simple atomic structure for two neutral atoms X and Y of different…
37 The diagrams show the simple atomic structure for two neutral atoms X and Y of different elements. X Y Which row is correct? atom with atom with a more more electrons positively charged nucleus A X X B X Y C Y X D Y Y
Mark scheme: D
Q38 · Plutonium-238 decays by the emission of an α-particle
38 Plutonium-238 decays by the emission of an α-particle. Which equation represents the decay of a plutonium-238 nucleus? 238 94Pu → 238 95U + 0 –1α A 238 94Pu → 234 92U + 4 2α B 238 94Pu → 234 92U + 2 4α C 238 94Pu → 242 96U + 4 2α D
Mark scheme: B
Q39 · A radioactive isotope has a half-life of 8 days
39 A radioactive isotope has a half-life of 8 days. A detector close to a sample of this isotope gives a count rate of 200 counts per minute. Without the source, the background count is 20 counts per minute. What is the count rate due to the source after 8 days? A 80 counts per minute B 90 counts per minute C 100 counts per minute D 110 counts per minute
Mark scheme: B
Q40 · Why are some radioactive sources stored in boxes made from lead?
40 Why are some radioactive sources stored in boxes made from lead? A Lead absorbs emissions from the radioactive sources. B Lead decreases the half-life of radioactive sources. C Lead increases the half-life of radioactive sources. D Lead repels emissions from the radioactive sources.
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.
4Forces4Energy, work and power3Kinetic particle model of matter3Radioactivity3Electrical quantities2Electromagnetic effects2Light2Motion2Pressure2Transfer of thermal energy2Density1Electrical safety1Electromagnetic spectrum1General properties of waves1Mass and weight1Momentum1Physical quantities and measurement techniques1Simple phenomena of magnetism1Sound1The nuclear model of the atom1Thermal properties and temperature1What you needed in this session
Cambridge’s own grade thresholds for 2019 Oct/Nov, Paper 2 · Variant 2. A higher threshold means an easier paper — the bar moves with how the cohort did.