Cambridge IGCSE Physics 0625 — 2020 May/June Paper 1 · Variant 3

1 Diagram 1 shows a solid, rectangular-sided block. top front side diagram 1 Diagram 2 shows the same block from the front and from the side. 7 6 5 4 3 front side 2 1 cm 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 cm diagram 2 Metre rules have been shown close to the edges of the block. What is the volume of the block? A 120 cm3 B 168 cm3 C 264 cm3 D 1155 cm3

Mark scheme: B

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2 The speed–time graph shows the motion of an object. 5 speed m / s 0 0 5 10 15 20 25 time / s How far does the object travel at constant speed? A 25 m B 50 m C 75 m D 125 m

Mark scheme: B

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3 Which statement about acceleration is correct? A It is related to the changing speed of an object. B It is the distance an object travels in one second. C It is the force acting on an object divided by the distance it travels in one second. D It is the force acting on an object when it is near to the Earth.

Mark scheme: A

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4 Two metal blocks P and Q have identical dimensions. They hang on identical spring balances. N N 0 0 1 1 2 2 3 3 4 4 5 5 6 6 P Q Which statement about P and Q is correct? A They have different volumes and different weights. B They have different volumes and equal weights. C They have equal volumes and equal weights. D They have equal volumes and different weights.

Mark scheme: D

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5 Which row gives the correct weight for the mass shown? The value of g is 10 N / kg. mass / kg weight / N A 2 20 B 10 1 C 10 10 D 20 2

Mark scheme: A

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6 A rectangular gymnasium is 50 m long, 25 m wide and 8.0 m high. The density of air is 1.2 kg / m3. What is the best estimate of the mass of air in the gymnasium? A 0.00012 kg B 100 kg C 8300 kg D 12 000 kg

Mark scheme: D

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7 The diagram shows two of the three vertical forces acting on a hot-air balloon. The hot-air balloon is moving upwards at constant speed. upthrust = 2500 N weight = 2200 N What is the air resistance acting on the hot-air balloon? A 300 N downwards B 300 N upwards C 4700 N downwards D 4700 N upwards

Mark scheme: A

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8 Which statement about the moment of a force is not correct? A If an object is balanced about a pivot the resultant moment on the object must be zero. B The moment of a force is a measure of its turning effect. C The moment of a force about a point is equal to: force × perpendicular distance from the point. D The moment of a force about a point increases when the perpendicular distance of the force from the point decreases.

Mark scheme: D

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9 A mass bounces up and down on a steel spring. The diagram shows the mass and the spring at different points during the motion. mass mass highest moving moving point down up lowest point At which point does the mass have the least gravitational potential energy and at which point is the most elastic energy stored in the spring? least amount of most elastic energy gravitational stored in spring potential energy A mass moving down mass moving up B mass moving down lowest point C lowest point mass moving up D lowest point lowest point

Mark scheme: D

More questions on Energy, work and power

10 Which energy resource stores kinetic energy? A coal B nuclear fission C solar D wind

Mark scheme: D

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11 A man can either take an escalator or a lift to travel up between two floors in a hotel. escalator lift The escalator takes 20 seconds to carry the man between the two floors. The useful work done against gravity is W. The useful power developed is P. The lift takes 30 seconds to carry the same man between the same two floors. How much useful work against gravity is done by the lift, and how much useful power is developed by the lift? useful work useful power done against developed by lift gravity by lift A more than W less than P B more than W P C W less than P D W P

Mark scheme: C

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12 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 P, Q and R produce the same pressure

Mark scheme: A

More questions on Pressure

13 The diagram shows a U-shaped glass tube, closed at one end by a tap. The glass tube contains a liquid as shown. atmospheric pressure closed tap trapped gas X Y liquid Some of the trapped gas is removed. What will happen to the levels X and Y? level X level Y A higher lower B higher higher C lower higher D lower lower

Mark scheme: A

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14 What is the correct particle diagram for a solid? A B C D

Mark scheme: B

More questions on Kinetic particle model of matter

15 A sealed box contains a fixed mass of gas. Which action results in each molecule of the gas colliding with the walls of the container less frequently and with a smaller force? A Decrease the temperature of the gas. B Decrease the volume of the container. C Increase the temperature of the gas. D Increase the volume of the container.

Mark scheme: A

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16 The diagram shows a liquid-in-glass thermometer. X Y Which row gives the correct labels for the thermometer? X Y A water narrow tube of uniform diameter B alcohol narrow tube of uniform diameter C water this end immersed in substance to be measured D alcohol this end immersed in substance to be measured

Mark scheme: B

More questions on Thermal properties and temperature

17 The diagrams show four blocks of steel. The blocks are all drawn to the same scale. The same quantity of thermal energy is given to each block. Which block shows the greatest rise in temperature? A B C D

Mark scheme: A

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18 A gas is cooled so that its molecules move more slowly, come closer together and do not move freely. Which process is being described? A boiling B condensing C freezing D melting

Mark scheme: B

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19 The diagram shows a vacuum flask used to keep a liquid warm. airtight lid outer cover vacuum silvered walls Which methods of heat loss are reduced by the vacuum between the silvered walls? A conduction only B conduction and convection only C convection and radiation only D conduction, convection and radiation

Mark scheme: B

More questions on Transfer of thermal energy

20 Equal volumes of water at 100 °C are put in four containers. Two containers have matt black sides and two containers have shiny white sides. One of each type of container has a lid. The containers are left for two minutes. Which container has the highest temperature? A B C D lid lid matt black sides matt black sides shiny white sides shiny white sides

Mark scheme: D

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21 The diagram shows a wave. 8 cm 3 cm 6 cm 4 cm What are the amplitude and the wavelength of this wave? amplitude / cm wavelength / cm A 3 4 B 3 8 C 6 4 D 6 8

Mark scheme: B

More questions on General properties of waves

22 Waves travel more quickly on the surface of water when the water is deep. A stone is dropped at point X into a pool of varying depth. The diagram shows the first three wavefronts on the surface of the pool. The region between X and which labelled point is likely to be the deepest? B wavefronts A X C D

Mark scheme: C

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23 The diagram shows a ray of light incident on a plane mirror. mirror 35° The angle between the ray and the mirror is 35°. The ray is reflected by the mirror. What is the angle of reflection? A 35° B 55° C 70° D 110°

Mark scheme: B

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24 A beam of white light is split into a spectrum of seven colours. Which name is given to this process? A diffraction B dispersion C reflection D refraction

Mark scheme: B

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25 An intruder alarm sensor detects that a person is warmer than his surroundings. Which type of electromagnetic wave does the sensor detect? A infrared B radio C ultraviolet D visible light

Mark scheme: A

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26 A tuning fork produces a sound when it vibrates. What is the effect on the sound produced when the tuning fork vibrates more times every second and with a larger amplitude? A higher pitch and less loud B higher pitch and louder C lower pitch and less loud D lower pitch and louder

Mark scheme: B

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27 The diagram shows a magnet with some plotting compasses. The compasses show the direction of the magnetic field of the magnet. Which plotting compass has the needle pointing in the wrong direction? A D N S B C

Mark scheme: C

More questions on Simple phenomena of magnetism

28 Four nails A, B, C and D are tested to find which makes the strongest permanent magnet. One of the nails is placed against a bar magnet and the number of paper clips which the nail can support is recorded. nail N S bar magnet paper clips The bar magnet is then removed and the number of paper clips remaining attached to the nail is recorded. Each nail is tested individually. Which nail becomes the strongest permanent magnet? number of paper clips attached to the nail bar magnet present bar magnet removed A 2 0 B 2 1 C 4 3 D 5 2

Mark scheme: C

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29 The diagram shows a positively charged conducting sphere and a wire connected to earth. positively charged sphere + + + wire + + + earth insulating support What happens when the wire is touched onto the sphere? A Electrons flow from earth to the sphere. B Electrons flow from the sphere to earth. C Positive charges flow from earth to the sphere. D Positive charges flow from the sphere to earth.

Mark scheme: A

More questions on Electrical quantities

30 Three electrical quantities are listed. ● potential difference ● electromotive force ● current Which quantities are measured in volts? A potential difference only B potential difference and current only C potential difference and electromotive force only D potential difference, electromotive force and current

Mark scheme: C

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31 A student uses the circuit shown to determine the resistance of two identical resistors. A V The voltmeter reading is 2.2 V and the ammeter reading is 0.25 A. What is the resistance of each resistor? A 0.275 Ω B 0.55 Ω C 4.4 Ω D 8.8 Ω

Mark scheme: C

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32 The diagram shows part of a circuit containing three identical lamps. X W Z Y At which two points do the currents have the same value? A W and X B W and Z C X and Y D Y and Z

Mark scheme: B

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33 Which circuit contains a thermistor and a heater? A B C D

Mark scheme: D

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34 A student constructs four circuits, each containing a fuse. The fuse blows in one circuit and both lamps in the circuit go out. In which circuit does the fuse blow and both lamps go out? A B C D

Mark scheme: D

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35 The graphs show how the currents in three circuits vary with time. circuit 1 circuit 2 1.5 1.5 current / A 1.0 current / A 1.0 0.5 0.5 0.0 0.0 –0.5 –0.5 –1.0 –1.0 –1.5 –1.5 time time circuit 3 1.5 current / A 1.0 0.5 0.0 –0.5 –1.0 –1.5 time In which circuits is there a direct current? A 1 and 2 B 1 and 3 C 2 only D 3 only

Mark scheme: B

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36 The diagram represents the transmission of electricity from a power station to homes that are many kilometres away. Two transformers are labelled X and Y. transmission pylon cables pylon cables large houses power ground station X distance Y What type of transformers are X and Y? X Y A step-down transformer step-down transformer B step-down transformer step-up transformer C step-up transformer step-down transformer D step-up transformer step-up transformer

Mark scheme: C

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37 A nuclide of the element iron has the symbol shown. 56Fe 26 What does a neutral atom of this nuclide contain? protons neutrons electrons A 26 30 26 B 26 56 30 C 30 26 56 D 56 26 30

Mark scheme: A

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38 The diagram shows an early model of the structure of an atom. ball of negatively positive charged charge electron This early model is different from the atomic model accepted today. Which statement about the early model is not included in the model accepted today? A The atom is mainly filled with a ball of positive charge. B The electrons are negatively charged. C There are positive and negative charges. D There are small particles called electrons.

Mark scheme: A

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39 A thin sheet of paper is placed between a radioactive source and a radiation detector. The count rate falls to a very low reading. paper detector counter source From this result, which type of radiation is the source emitting? A α-particles B β-particles C γ-rays D X-rays

Mark scheme: A

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40 Why should all radioactive materials be handled carefully? A They all make anything they touch radioactive. B They all catch fire very easily. C They all emit ionising radiation. D They all have long half-lives.

Mark scheme: C

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