2024 KCPSS P1 P2 QP + MS

1 KCPSS.4E.PHY.PRELIM.P1.2024 KUO CHUAN PRESBYTERIAN SECONDARY SCHOOL 2024 PRELIMINARY EXAMINATION Secondary 4 Express NAME CLASS REG. NO PHYSICS 6091/01 Paper 1 Multiple Choice 27 August 2024 1 hour Additional Materials: Multiple Choice Answer Sheet Setter: Mr. Foo Seng Hong READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name, class and register 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 15 printed pages including the cover page. [Turn Over]

2 KCPSS.4E.PHY.PRELIM.P1.2024 Multiple Choice Questions [40 marks] Answer all questions and shade your answers on the OMR sheet provided. 1 What is the order of magnitude of the diameter of a human hair? A 10-8 m B 10-6 m C 10-4 m D 10-2 m 2 Which pair contains a vector and a scalar quantity? A area and displacement B distance and volume C temperature and pressure D weight and velocity 3 A person drops a ball from rest vertically downwards from a height above ground as shown in the diagram. The ball hits the ground and bounces back up to a maximum height. Assuming no loss of energy to the surroundings, which graph best represents the velocity-time graph of the ball? A B C D v / ms-1 t / s v / ms-1 v / ms-1 v / ms-1 v / ms-1 t / s t / s t / s 0 0 0 0

3 KCPSS.4E.PHY.PRELIM.P1.2024 4 A race car is designed to change its high speed very quickly when racing on the track. It can slow down at a deceleration of 20 m/s2. What is its displacement as it comes to a stop in 1.7 s? A 12 m B 29 m C 34 m D 58 m 5 Two forces, 3 N and 7 N respectively, are acting on a small ball-bearing. Which is a possible resultant force acting on the ball-bearing? A 1 N B 3 N C 8 N D 11 N 6 A sphere falls from rest through the air. The graph shows the variation with time of the sphere’s velocity with time. Which diagram shows the forces, drawn to scale, acting on the sphere when it is at the velocity corresponding to point P on the graph? A B C D velocity time P 0 air resistance air resistance air resistance weight weight weight weight

4 KCPSS.4E.PHY.PRELIM.P1.2024 7 A mountaineer of weight 700 N at the bottom of Mount Everest climbs to the top. The gravitational field strength changes from 9.81 N/kg at the bottom to 9.79 N/kg at the top. What are his mass and weight at the top of Mount Everest? mass at top of Mount Everest / kg weight at top of Mount Everest / N A 71.4 699 B 71.4 700 C 71.5 699 D 71.5 700 8 The diagram shows a heavy non -uniform wooden plank resting on two supports which act as pivots (not to scale). Three forces F1, F2 and F3 are acting on the plank. The plank is in equilibrium. Which statement is correct? A F1 is larger than F2. B F2 is larger than F1. C F3 is larger than the sum of F1 and F2. D The sum of F1 and F2 is twice of F3. 9 The diagram shows how a wheel brace is used to loosen the nuts on a wheel. What is the dimension that should be increased so that less force is required to loosen the nuts? D C F3 B F2 A F1 wheel brace axis of rotation plank axis of rotation support 2 support 1

5 KCPSS.4E.PHY.PRELIM.P1.2024 10 Four glass objects have square bases of equal area. Which object is the least stable? A B C D 11 A builder lifts eight slabs from the ground onto the back of a lorry 1.5 m high. The total time taken is 48 s and each slab weighs 200 N. Assuming negligible air resistance. How much useful power does the builder produce? A 50 W B 400 W C 2 400 W D 3 200 W 12 A hydraulic press is balanced by a force of 200 N and a 300 kg mass. The gravitational field strength g is 10 N/kg. What is the area X of the larger piston? A 0.33 cm2 B 3.3 cm2 C 7.5 cm2 D 75 cm2 13 Some pollen grains are dropped on the surface of the water in a tank. Which of the following causes the movement of the pollen grains? A bombardment of pollen grains on water molecules B bombardment of water molecules on pollen grains C random motion of pollen grains D random motion of water molecules and pollen grain

6 KCPSS.4E.PHY.PRELIM.P1.2024 14 A gas in a sealed cylinder is heated. Which quantity does not increase as the gas is heated? A the average distance between the gas molecules B the average kinetic energy of the gas molecules C The average number of gas molecules hitting the cylinder walls per second D the average speed of the gas molecules 15 Ellie puts her hand on the wooden door of her classroom. The door feels warm. She then places her hand on the metal handle of the door and it feels cold. Which statement about what Ellie experienced is correct? A The door conducts internal energy more quickly to Ellie’s hand than the handle. B The door radiates infra -red heat more quickly to Ellie’s hand than the handle. C The hand conducts internal energy more quickly from the handle than from the door. D The handle feels colder because it is at a lower temperature than the door. 16 A 400 W heater is used to heat 0.40 kg of solid. The temperature-time graph of the substance is shown below. What is the specific latent heat of fusion of the substance? A 7 690 J/kg B 70 500 J/kg C 100 000 J/kg D 110 000 J/kg time / s temperature / K 50 55 60 65 70 50 100 150 200 250 0 0 heat gas

7 KCPSS.4E.PHY.PRELIM.P1.2024 17 A musical instrument produces two notes. One note of frequency f has a speed v and a wavelength 3.0 m in air. Another note has a frequency 3 f. What are its wavelength and speed in air? wavelength / m speed A 1.0 v B 1.0 3v C 9.0 v D 9.0 3v 18 The diagram shows the compressions (C) and rarefactions (R) of air molecules as a sound wave travels through. The speed of sound in air is 330 m/s. What is the frequency of this sound wave? A 297 Hz B 367 Hz C 733 Hz D 1100 Hz 19 A man stands between two tall buildings, P and Q. He is 50 m from P and 200 m from Q. He sounds a horn. He hears the first echo from building P and 1.0 s later he hears the first echo from building Q. What is the speed of sound calculated using this information? A 250 m/s B 300 m/s C 330 m/s D 500 m/s 90 cm R R R horn C C C building P 200 m C building Q 50 m

8 KCPSS.4E.PHY.PRELIM.P1.2024 20 Which type of electromagnetic radiation travels at the highest speed through a vacuum? A radio waves B visible light waves C X-rays D all have the same speed 21 Many devices produce electromagnetic waves when operating. Which device produces electromagnetic waves of the highest frequency? A mobile phone B sunbed C television controller D toaster 22 An object is placed in front of a converging lens. The l