GMSS Prelim P1

PHYSICS Paper 1 6091/01 Sec 4 Express Additional materials : Multiple Choice Answer Sheet 1 hour 15 August 2024 READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name, index number and class on all the work you hand in. There are forty questions in 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 work should be done in this paper. Acceleration due to gravity, g, is assumed to be 10 m/s2 and gravitational field strength, g, is assumed to be 10 N/kg, unless otherwise specified. This document consists of 16 printed pages. [Turn over Geylang Methodist School (Secondary) Preliminary Examination 2024

2 GMS(S)/Physics/P1/Prelim/2024/4E 1 Which measurement represents the longest length? A 1.2x10-4 Mm B 1.2x103 km C 1.2x105 cm D 1.2x107 µm 2 A ball made of plasticine is thrown vertically upwards towards the ceiling. At the highest point of its path, it is stuck at the ceiling. Which distance-time graph best represents the motion of the ball? A B C D 3 A squash ball hits the vertical sidewall of the court with a horizontal velocity of 12 m/s. It rebounds off the wall with a horizontal velocity of 8.0 m/s as shown in the diagram. The collision between the ball and the wall is 0.08 s. Take leftward as positive direction. What is the acceleration of the squash ball when it rebounds off the wall? A −50 m/s2 B 50 m/s2 C −250 m/s 2 D 250 m/s2

3 GMS(S)/Physics/P1/Prelim/2024/4E 4 A car accelerates uniformly from rest at time t = 0 s along a level road. The car travels 12 m in the time between t = 1.0 s and t = 2.0 s. How far does it travel in the time between t = 3.0 s and t = 4.0 s? A 28 m B 35 m C 48 m D 64 m 5 In a experiment, a student jumps upward off a common bathroom scale as the laboratory partner records the scale reading. What does the laboratory partner observe during the instant the student pushes off? A The scale reading will remain unchanged during the entire time the student is in contact with the scale. B The scale reading will increase momentarily then will decrease during the entire time the student is in contact with the scale. C The scale reading will decrease then increase during the entire time the student is in contact with the scale. D The scale reading will decrease during the entire time the student is in contact with the scale. 6 A 1000 kg mass was placed 2 m directly above a 1 kg mass and both were dropped from a tower at the same time. Assuming air resistance is negligible. Which statement is correct about the time of landing? A The 1000 kg mass would land on the ground at same time as the 1 kg mass. B The 1000 kg mass would land on the ground faster than the 1 kg mass. C The 1000 kg mass would land on the ground later than the 1 kg mass. D Not possible to predict. 7 An elevator of mass 500 kg is travelling downwards with a constant acceleration of 2.0 m/s2. What is the tension in the elevator cable? A 2500 N B 4000 N C 5000 N D 6000 N

4 GMS(S)/Physics/P1/Prelim/2024/4E 8 5000 kg of iron is melted and mixed with 2.0 m3 of molten copper. The density of molten iron and molten copper are 7500 kg/m3 and 9000 kg/m3 respectively. What is the approximate density of the mixture? A 8000 kg/m3 B 8200 kg/m3 C 8400 kg/m 3 D 8600 kg/m3 9 A granite rock at the surface of the Earth has density ρ. The rock is transported to the surface of another planet. The acceleration of free fall on the surface of the other planet is twice that on the surface of the Earth. What is the density of the rock on the other planet? A 0.5 ρ B ρ C 2 ρ D 4 ρ 10 A student tries out different ways of stacking two containers. One container is made of wood, and the other is made of metal. The dimensions of the containers are identical. Which arrangement has the greatest stability?

5 GMS(S)/Physics/P1/Prelim/2024/4E 11 A closed U-shaped tube contains a stationary liquid of density ρ. One side of the tube contains a gas at pressure p1 and the other side contains a gas at pressure p2, as shown. (The acceleration of free fall is g.) Which equation is correct? A p1 = ρ g y B p2 = ρ g (y - z) C p1 – p2 = ρ g (y – z) D p1 – p2 = ρ g (x – y) 12 The graph shows how the pressure exerted by a liquid varies with depth below the surface. What is the density of the liquid if the gravitational field strength is 10 N/kg ? A 600 kg/m3 B 750 kg/m3 C 1200 kg/m 3 D 7500 kg/m3

6 GMS(S)/Physics/P1/Prelim/2024/4E 13 A car of mass 1500 kg is initially travelling at a speed of 15 m/s. 3.0 x 105 J of energy is transferred to its kinetic store by mechanical work while undergoing a constant acceleration. What is the new speed of the car? A 20 m/s B 25 m/s C 30 m/s D 35 m/s 14 An electric motor is required to lift an object of weight 600 N up a vertical height of 100 m in 2 minutes. What will be the electrical power required if the overall efficiency of the motor is 80%? A 400 W B 625 W C 24 000 W D 37 500 W 15 A gas in a sealed cylinder is heated. Which quantity does not increase as the gas is heated? A the average number of gas molecules hitting the cylinder walls per second B the average kinetic energy of the gas molecules C the average speed of the gas molecules D the average distance between the gas molecules 16 A student uses a double-walled glass vessel to contain a hot liquid. Which reduces the energy transfer by radiation? A vacuum in the space between the walls B painting surface E black C painting surface F silver D painting surface G black

7 GMS(S)/Physics/P1/Prelim/2024/4E 17 The diagram shows a frozen pond with the surface of the ice slowly melting as energy is transferred by heating from the warmer air above it. By which processes is the energy transferred from the air to the ice? A conduction, convection and radiation B conduction and convection only C conduction and radiation only D convection and radiation only 18 A solid substance is heated. Its temperature variation with time is shown in the graph. Which of the following statements is true? A The total internal energy of the substance remains constant throughout. B The substance does not gain thermal energy when temperature is constant. C The substance has a greater specific heat capacity in its solid state, than in its liquid state. D The substance has an overall increase in internal potential energy and internal kinetic energy. 19 Which source generates longitudinal waves? A a lamp B a wireless microphone C a loudspeaker D a noise level detector in the library

8 GMS(S)/Physics/P1/Prelim/2024/4E 20 The diagram shows a wave travelling in a slinky spring after being pushed by a hand. If a compression takes 1.0 s to travel from point P to Q, what is the frequency of this wave? A 0.33 Hz B 0.5 Hz C 2.0 Hz D 3.0 Hz 21 Ultrasound is used to map the ocean floor. During one survey, the depth of water is 1200 m. An ultrasound pulse is sent from the surface and when it returns to the ship, another pulse is sent immediately. In any period of 8.0 s, five pulses are sent down from the surface. What is the speed of the ultrasound in water? A 600 m/s B 75