2024 DMN P1 P2 QP + MS

DUNMAN SECONDARY SCHOOL CANDIDATE NAME CLASS INDEX NUMBER PRELIMINARY EXAMINATION 2024 SECONDARY 4 EXPRESS PHYSICS 6091/01 Paper 1 Multiple Choice 23 August 2024 1 hour Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your name, class and index number on the Answer Sheet in the spaces provided unless this has been done for you. There are forty questions on this paper. Answer all questions. For each question there are four possible answers A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the separate Answer Sheet. Read the instructions on the Answer Sheet very carefully. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet. The use of an approved scientific calculator is expected, where appropriate. This document consists of 17 printed pages.

2 6091/01/PRELIM/4EXP/2024 1 Which instrument is most suitable for measuring the internal diameter of a pipe? A digital calipers B digital micrometer C manometer D measuring cylinder 2 Pendulum X makes 25 complete oscillations in 10 s. Pendulum Y makes 15 complete oscillations in 15 s. Both pendulums were displaced by a small angle before their oscillations. Which statement must be true? A Pendulum Y has a shorter period than pendulum X. B The angle of swing of release for pendulum Y is smaller than that of pendulum X. C The mass of the bob of pendulum Y is smaller than that of pendulum X. D The string of pendulum Y is longer than that of pendulum X. 3 The graph shows how displacement varies with time for three cars X, Y and Z. Which row describes the motion of cars X, Y and Z? car X car Y car Z A decreasing speed constant speed moving in the same direction as car X B decreasing speed not moving moving in the opposite direction to car X C increasing speed constant speed moving in the opposite direction to car X D increasing speed not moving moving in the same direction as car X displacement time car Z car X car Y

3 6091/01/PRELIM/4EXP/2024 4 Which graph represents the motion of a body falling vertically that reaches a terminal speed? 5 Four forces F1, F2, F3 and F4 act on an object. The directions of the forces are as shown. The object moves vertically downwards at a constant speed. Which statement must be correct? A All four forces are the same magnitude. B F1 and F2 are equal in magnitude and F3 and F4 are equal in magnitude. C F1 and F2 are equal in magnitude but both are smaller than F3 or F4. D F4 is larger than F3 but F1 and F2 are equal in magnitude. 6 The gravitational field strength on the moon is about one -sixth of that on the Earth. An astronaut returns from the Moon to the Earth. What effect does this have on the astronaut’s weight and inertia? weight inertia A decreases higher on Earth B decreases same on Earth and Moon C increases higher on Earth D increases same on Earth and Moon F3 F1 F2 F4 A B C D time time time time

4 6091/01/PRELIM/4EXP/2024 7 A load G is attached to a beam. This beam is balanced on a pivot at its mid -point, and the system is at rest in the position as shown. Which statement must be true? A Decreasing the magnitude of load G will cause the beam to rotate clockwise about the pivot B If the load G is shifted nearer to the pivot, the beam would rotate anti-clockwise about the pivot. C The centre of gravity of the beam is to the right of the pivot. D The load G is equal to the weight of the beam. 8 The barometer shown is faulty and contains trapped air. If the atmospheric pressure is 76 cmHg and the density of mercury is 13 600 kg/m 3, what is the pressure at X? A 33 cmHg B 48 cmHg C 71 cmHg D 81 cmHg G X 71 cm mercury 43 cm trapped air

5 6091/01/PRELIM/4EXP/2024 9 An alloy is made from two metals X and Y. The mass of metals X and Y are 14 g and 23.5 g respectively. The volume of metal X is 1.1 cm3 and the alloy has a density of 15 g/cm3. What is the volume of metal Y? A 0.8 cm3 B 1.4 cm3 C 2.2 cm3 D 2.5 cm3 10 A crane moves its load diagonally, as shown. By which distance must the weight of the load be multiplied in order to find the increase in gravitational potential store of the load? 11 A crane lifts a weight of 600 N through a vertical height of 30 m in 25 s. The efficiency of the crane’s motor is 40 %. What is the power input to the crane’s motor? A 0.29 kW B 0.72 kW C 1.8 kW D 1800 kW load D A B C

6 6091/01/PRELIM/4EXP/2024 12 Which object contains the molecules with the highest kinetic energy? 13 The diagram shows a light source illuminating smoke particles in air. When observed under a microscope, moving points of light are seen. What are these moving points of light? A Reflected light from air particles, colliding with smoke particles. B Reflected light from smoke and air particles that move randomly. C Reflected light from smoke particles, colliding with air particles. D Reflected light from smoke particles that move due to convection. 14 “When a substance is heated, the average kinetic energy of the particles in the substance remains constant. The particles begin to slide past each other.” What is the name of the process described above? A boiling B condensation C freezing D melting light source microscope smoke cell view through microscope A B C D ice cube at -10 oC water at room temperature wood at room temperature steam at 110 oC

7 6091/01/PRELIM/4EXP/2024 15 A rod is made up of copper and wood joined together. The rod is heated at the joint in the centre for about a minute. At which labelled point will the temperature be lowest, and at which point will it be highest? lowest temperature highest temperature A P Q B P R C S P D S R 16 Eskimos build igloos as temporary shelter in extremely cold places such as the Arctic. The diagram shows a cross-section of an igloo. The entrance is dug deep enough (lower than the sleeping area) to create a cold sink. Which statement about the air in the igloo is correct? A Cold air is denser and remains in the cold sink. B The air in the igloo is heated up by conduction only. C The warm air in the igloo is less dense, contracts and rises. D Warm air in the cold sink expands, becomes denser and rises out of the cold sink to heat up the rest of the igloo. sleeping area sleeping area cold sink wood copper P Q R S

8 6091/01/PRELIM/4EXP/2024 17 In an experiment to find the specific heat capacity of a metal, it is found that 5200 J is needed to raise the temperature of a 2.0 kg block by 20 oC. Calculate the specific heat capacity of the metal. A 130 J/(kg oC) B 520 J/(kg oC) C 52 000 J/(kg oC) D 104 000 J/(kg oC) 18 The speed of a wave is 4.0 × 10 5 m/s. The wavelength of the same wave is measured to be 5.0 × 106 m. Determine the period of the wave. A 5.0 × 10-13 s B 0.080 s C 12.5 s D 2.0 × 1012 s 19 A police car sounds its siren when travelling during an emergency. The siren produces two different sounds X and Y, which are emitted alternately. The diagram represents the sound emitted by the siren. Which sound is softer and which sound has a lower pitch? softer sound sound of lower pitch A X X B X Y C Y X D Y Y X