2022 ANDSS Phy Prelims P1

This document consists of 18 printed pages. Setter: Mr Richmond Ang O ANDERSON SECONDARY SCHOOL Preliminary Examination 2022 Secondary Four Express CANDIDATE NAME: CLASS: / INDEX NUMBER: PHYSICS Paper 1 Multiple Choice 6091/01 12 September 2022 1 hour 0800 – 0900 h Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid/tape. Write your name, class and index number on the Answer Sheet 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 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.

2 PRELIM 4E PHY 2022 6091/1 1 What is the typical size for a small atom? A 0.1 cm B 0.1 km C 0.1 μm D 0.1 nm 2 The height, h, of an oscillating mass is measured by a data logger. A graph of height, h, against time is shown below. What is the period of the oscillation? A 0.15 s B 0.30 s C 0.45 s D 0.60 s 3 A car driver immediately stepped on the brakes when he saw a cat dashing across the road. The car dec elerated at a constant rate of 10 m/s2. The car finally came to a stop after it travelled for 45 m. How long did the car take to come to a complete stop? A 1.0 s B 3.0 s C 4.5 s D 10 s 0.45 s 0.30 time / s 0.20 h / m Retort Stand Oscillating mass Height, h Data logger

3 PRELIM 4E PHY 2022 6091/1 4 Two forces, X and Y, act upon an object O. The arrows represent the magnitudes and directions of the forces. Which diagram shows the resultant force of X and Y? 5 A man with an open parachute falls to Earth at constant speed. The following forces act on different bodies: P the air resistance acting on the man Q the upward force of the man on the Earth R the weight of the man S the downward pull of the man on the parachute Which two forces are action-reaction force pair? A P and Q B P and R C P and S D Q and R

4 PRELIM 4E PHY 2022 6091/1 6 A tennis ball falls from the upstairs window of a house. What can be said about the acceleration of the ball if air resistance is ignored? A It depends on the mass of the ball. B It increases as the density of the ball increases. C It increases as the ball falls. D It stays the same as the ball falls. 7 In a large container in an oil refinery, three oils of different densities are mixed. No chemical activity occurs. The mixture consists of: • 1200 kg of oil of density 1100 kg/m3 • 1500 kg of oil of density 860 kg/m3 What is the density of the mixture? A 920 kg/m3 B 950 kg/m3 C 980 kg/m3 D 1800 kg/m3 8 Which object, a bowling ball at rest or a soccer ball flying towards the goal mouth at a very high speed, has a higher inertia? A The bowling ball has the higher inertia because it has the greater mass. B The bowling ball has the higher inertia because it is not moving. C The soccer ball has the higher inertia because it has the greater volume. D The soccer ball has the higher inertia because it is moving very fast.

5 PRELIM 4E PHY 2022 6091/1 9 An unbiased dice is a cube with the centre of gravity at the middle as shown in the diagram. Which action changes the position of the centre of gravity of the dice? A Create the dice from a denser material. B Drill a small hole at the side of the dice. C Move it to a place with a larger gravitational field strength D Rotate the dice 180° so that the top surface is now at the bottom 10 A heavy box of weight W is pushed up a frictionless slope. What is work done by the weight W in moving from top to bottom? A Wx B Wy C W(y-z) D W(x+z) 11 Energy resources are used to produce electricity. Which resource is non-renewable? A hydroelectric B nuclear fission C tidal waves D wind CG

6 PRELIM 4E PHY 2022 6091/1 12 A manometer is connected to an air pump, P as shown. The atmospheric pressure is 1.03 x 105 Pa and the density of the liquid used in the manometer is 1550 kg/m3. (The gravitational field strength is 10 N/kg) What is the pressure at P? A 3.10 x 102 Pa B 1.00 x 105 Pa C 1.06 x 105 Pa D 3.10 x 105 Pa 13 The diagram below shows a tube with its ends placed in liquid X and Y. The tube is filled with gas. Which statement(s) is/are true? I. Pressures at A, B and C are the same. II. The density of liquid X is greater than that of liquid Y. III. The gas pressure is greater than atmospheric pressure. A I only B III only C I and II only D II and III only 20.0 cm P gas M A liquid Y liquid X C B

7 PRELIM 4E PHY 2022 6091/1 14 Illuminated smoke particles, suspended in air, are viewed under a microscope. They are seen to move randomly. Which statement best explains the movement of the smoke particles? A The smoke particles are bombarded continuously by the air molecules. B The smoke particles are gaining kinetic energy from the hot light bulb. C The smoke particles are moving about due to convection currents. D The smoke particles are vibrating more vigorously in their fixed positions. 15 A fixed mass of gas is heated in a frictionless syringe and expands at constant pressure. Which statement about the gas is correct? A The average distance between the gas molecules decreases. B The average force of the molecu les on the wall of the piston remains constant. C The average speed of the gas molecules remains constant. D The frequency of collisions of the gas molecules on the wall of the syringe decreases. 16 The diagram below shows a thermocouple with its two metal wires placed in solutions of different temperatures. The voltmeter reads 16 mV. If the copper wire is replaced by an iron wire, what is the voltmeter reading? A 0 mV B 12 mV C 16 mV D 24 mV

8 PRELIM 4E PHY 2022 6091/1 17 A platinum resistance thermometer has a resistance of 100  at 0 C and resistance of 350  at 100 C. What would the temperature be when the platinum wire has a resistance of 75 Ω? A -30 C B -10 C C 10 C D 30 C 18 Some Japanese restaurants use paper pots for their customers to boil the food themselves. Why does the paper pot not catch fire when in contact with the flame? I. The paper is thin and heat is conducted quickly to the water in the paper pot. II. Water has a boiling point lower than the burning temperature of the paper. III. Water has a high specific latent heat A I and II only B I and III only C II and III only D I, II and III 19 Less thermal energy is needed to raise the temperature of 1.0 kg of copper by 1.0 °C than is needed to raise the temperature of 1.0 kg of water by 1.0 °C. Which statement explains this? A Copper has a higher melting point. B Copper has a lower specific heat capacity. C Copper has a smaller specific latent heat. D Copper is a better conductor of thermal energy.

9 PRELIM 4E PHY 2022 6091/1 20 What is meant by the amplitude of a wave? A the distance between the extreme points of a particle’s motion B the maximum distance a particle moves from its equilibrium position C the maximum ener