YCKSS Prelim P1

Name: Index Number: Class: YIO CHU KANG SECONDARY SCHOOL O-LEVEL PRELIMINARY EXAMINATION 2024 SECONDARY FOUR EXPRESS PHYSICS 6091/01 Paper 1 1 hour Additional Materials: 10 September 2024 (Tuesday) Optical Answer Sheet (OAS) READ THESE INSTRUCTIONS FIRST Write in soft pencil on the OAS. Do not use staples, paper clips, glue or correction fluid. Write your name, index number and class on the OAS in the spaces provided. 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 OAS. Read the instructions on the OAS 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 question paper. The use of an approved scientific calculator is expected, where appropriate. Setter: Mr Brandon Chin This document consists of 20 printed pages.

2 4E O-LEVEL PRELIM EXAM 2024 6091/01 1 Which one of the following measurements would a digital micrometer screw gauge be most suitable? A length of this page B diameter of a beaker C diameter of a wire D radius of an atom 2 Which displacement-time graph represents a body whose velocity is decreasing? A B C D displacement displacement displacement displacement time time time time

3 4E O-LEVEL PRELIM EXAM 2024 6091/01 3 The diagram shows the speed-time graph for an object travelling in a straight line. What is the acceleration of the object during the first two seconds and the total distance that it travels? acceleration / ms-2 total distance / m A 0.50 10 B 0.50 20 C 2.0 10 D 2.0 20 4 A sphere, P, made of steel, has a weight of 10 N on Earth. Another sphere, Q, also made of steel, has a weight of 10 N on Mars. The gravitational field strength on Earth is greater than the gravitational field strength on Mars. Which of the following statements is correct? A The mass of sphere P is the same as the mass of sphere Q. B The mass of sphere P is less than the mass of sphere Q. C On Mars, the weight of sphere P is more than 10 N. D On Earth, the weight of sphere Q is less than 10 N.

4 4E O-LEVEL PRELIM EXAM 2024 6091/01 5 Two identical beakers contain the same mass of liquid. Each beaker contains a different liquid. Liquid Q has a density ρ. What is the density of liquid P? A ρ ÷ 3 B ρ C 3 ρ D 9 ρ 6 A crate of oranges is pulled across a rough surface by a force, causing the crate to accelerate at 1.5 m/s2. The combined mass of the crate and oranges is 24 kg. Which of the following shows the correct pair of the pulling force and frictional force? frictional force / N pulling force / N A 17 53 B 22 38 C 38 22 D 53 17 liquid P liquid Q rough surface pulling force frictional force

5 4E O-LEVEL PRELIM EXAM 2024 6091/01 7 When a heavy coin falls a short distance towards the ground, it does not reach terminal velocity. Which of the following statements best explains why this is so? A The coin has not hit the ground. B The weight of the coin equals the air resistance. C The weight of the coin increases as air resistance increases. D The weight of the coin is more than the air resistance. 8 The diagram shows a man holding a stationary sack and barrow. He applies a vertical force, F, to the handle of the barrow. The weight of the sack and barrow, W, and the centre of mass are shown. The wheel acts as a pivot. What are the moments produced about the pivot due to F and W? moments due to F / Ncm moments due to W / Ncm A 45 x F 15 x W B 60 x F 15 x W C 60 x F 20 x W D 80 x F 20 x W W F centre of mass of sack and barrow 20 cm 45 cm 15 cm 80 cm pivot

6 4E O-LEVEL PRELIM EXAM 2024 6091/01 9 The diagrams show four table lamps resting on a table. The position of the centre of mass of each lamp is labelled X. Which lamp is the least stable? 10 The pressure inside a gas cylinder is measured separately using two different mercury manometers as shown in Fig. P and Q. One of the manometers has an open end while the other has a sealed end. A barometer, as shown in Fig. R, is used to measure the atmospheric pressure at the location of the experiment. The diagrams are not drawn to scale. What is the height, h, of the mercury in Fig. Q? A 40 mm B 720 mm C 800 mm D 1000 mm X X X X vacuum 760 mm mercury sealed end Pgas to gas supply h Pgas Patm 200 mm to gas supply 240 mm manometer barometer Fig. P Fig. Q Fig. R manometer vacuum

7 4E O-LEVEL PRELIM EXAM 2024 6091/01 11 The block below can be placed in any orientation on the ground. Given that the minimum pressure exerted by the block on the ground is 100 Pa, what is the maximum pressure exerted by the block on the ground? A 120 Pa B 140 Pa C 160 Pa D 180 Pa 12 A student carries out some simple exercises. The gravitational field strength is 10 N/kg. Which of the following exercises results in the most work done? 1 kg 2 kg 2 kg 1 kg lifting through 1 m lifting through 2 m pulling through 2 m against a frictional force of 2 N pulling through 1 m against a frictional force of 4 N 60 cm 80 cm 50 cm

8 4E O-LEVEL PRELIM EXAM 2024 6091/01 13 An object falls from a height of 5.0 m. As it hits the ground, the object has 750 J of energy in its kinetic store. Air resistance can be ignored. The gravitational field strength is 10 N/kg. What is the mass of the object? A 15 kg B 50 kg C 75 kg D 150 kg 14 A solar panel is used to recharge a battery. The solar panel produces 0.80 W of electrical power. The panel is 20% efficient. What is the power input of the sunlight onto the solar panel? A 0.16 W B 4.0 W C 8.0 W D 16 W

9 4E O-LEVEL PRELIM EXAM 2024 6091/01 15 Smoke particles in a transparent box are observed using a microscope. A small point of light is seen to move around as shown. What does this experiment demonstrate about air molecules? A They are in continuous random motion. B They can be seen through a microscope. C They move because of collisions with smoke particles. D They move more quickly when they are heated. 16 Four cups A, B, C and D contain hot coffee. Which of the following cups will the coffee cool the fastest? the outer surface of the cup the top of the cup A black covered with a lid B black no lid C white covered with a lid D white no lid  

10 4E O-LEVEL PRELIM EXAM 2024 6091/01 17 Equal masses of two different liquids are put into identical beakers. Liquid X is heated for 100 s and liquid Y is heated for 200 s by heate