TKSS 2024 Prelim P1 + Ans

TANJONG KATONG SECONDARY SCHOOL Preliminary Examination 2024 Secondary 4 NAME CLASS Index Number 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. 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 My Predicted Grade Before doing assessment: After doing assessment: This document consists of 21 printed pages and 3 blank pages.

2 Physics 6091/Sec 4/Prelim/P1/2024 1 When a force F moves its point of application through a displacement d in the direction of the force, the work W done by the force is given by W = F x d How many vector quantities and scalar quantities does this equation contain? A three scalar quantities B three vector quantities C one scalar quantity and two vector quantities D one vector quantity and two scalar quantities 2 Two runners take part in a race. The graph shows how the speed of each runner changes with time. What does the graph show about the runners at time t? A Runner 1 has zero acceleration. B Runner 1 runs ahead of runner 2. C Runner 2 is slowing down. D Both runners are moving at the same speed.

3 Physics 6091/Sec 4/Prelim Exam/P1/2024 3 A satellite orbits a planet in a circular path as shown. The satellite experiences a gravitational force due to the planet. In which direction is the force on the planet due to the satellite? 4 A car travels according to the acceleration-time graph as shown below. Which velocity-time graph best describes the motion of the car? A B C D time / s time / s time / s time / s time / s

4 Physics 6091/Sec 4/Prelim/P1/2024 5 A cyclist is travelling in a straight line along a horizontal road at a constant speed. A constant driving force F acts on the cyclist in the forward direction shown. Which statement about the magnitude of the frictional forces acting on the cyclist is correct? A The magnitude is smaller than F, but greater than zero. B The magnitude is greater than F. C The magnitude is equal to F. D The magnitude is zero. 6 The diagram shows two identical bars of negligible weight. All the forces acting on each bar are marked. Which bars are in equilibrium? A bar 1 only B bar 2 only C bar 1 and bar 2 D neither bar 1 nor bar 2

5 Physics 6091/Sec 4/Prelim Exam/P1/2024 7 An electron has mass. Where does a stationary electron experience a force? A in an electric field only B in a gravitational field only C in a gravitational field and an electric field only D in a gravitational, electric and magnetic field 8 A force F causes a moment about point O on an L-shaped bar. The force F acts at point P. What is the moment of F about O? A Fd1 B Fd2 C Fd3 D Fd4

6 Physics 6091/Sec 4/Prelim/P1/2024 9 An underwater diver experiences varying pressure when he dives in different bodies of water. The density of water in the lake is less than in the ocean. In which position does the diver experience the smallest pressure due to the water? 10 The diagram shows a mercury manometer connected to a gas container. The density of mercury is 14 000 kg / m3 . The gravitational field strength g is 10 N / kg. What is the pressure difference between the gas in the container and the atmosphere? A 28 000 Pa B 42 000 Pa C 56 000 Pa D 84 000 Pa sea wall 60 cm 20 cm

7 Physics 6091/Sec 4/Prelim Exam/P1/2024 11 A bicycle braking system transfers energy from a kinetic store to an interna l store. A motor transfers energy from a chemical store to a kinetic energy store. What is the energy pathway used in each of the energy transfer? braking system motor A electrical mechanical B electrical electrical C mechanical mechanical D mechanical electrical 12 An electric motor is used to lift a load at a constant speed. The energy transferred to the gravitational potential store in the load increases. The moving load also has energy in the kinetic store. Which expression is used to calculate the efficiency of the motor when the load is being lifted at a constant rate? A efficiency= energy transferred per second to gravitational potential store of load energy transferred per second to kinetic store of load B efficiency= energy transferred per second to gravitational potential store of load power supplied C efficiency= power supplied energy transferred per second to gravitational potential store of load D efficiency= power supplied energy transferred per second to kinetic store of load

8 Physics 6091/Sec 4/Prelim/P1/2024 13 A box with mass 4.0 kg is pulled from rest along a horizontal floor by a constant force F. A constant frictional force of 1.0 N acts on the box. When the box has travelled 0.90 m, its velocity is 1.5 m / s. What is force F? A 3.6 N B 4.5 N C 5.0 N D 6.0 N 14 The diagram shows a convection current caused by a piece of ice placed in a beaker of water at room temperature. Which row correctly compares the temperatures and densities at water points P and Q? temperature at P density at P A higher than at Q higher than at Q B higher than at Q lower than at Q C lower than at Q higher than at Q D lower than at Q lower than at Q

9 Physics 6091/Sec 4/Prelim Exam/P1/2024 15 The outside of one of two identical shiny metal containers is painted dull black. The containers are filled with equal masses of hot water at the same temperature. Why does the dull black container cool more quickly? A Black surfaces are better conductors than shiny surfaces. B Black surfaces are better emitters of radiation than shiny surfaces. C Black surfaces are better reflectors of radiation than shiny surfaces. D Black surfaces are worse absorbers of radiation than shiny surfaces. 16 A student on a camping expedition cools a sealed bottle of water which is at the same temperature as the surrounding air. Which method cools the water at the greatest rate? A Wrap the bottle in aluminium foil and place it in a shady place. B Wrap the bottle in dry, white paper and put it in a sunny place. C Wrap the bottle in foam and put it in a breeze. D Wrap the bottle in wet paper and put it in a breeze. 17 Small pollen particles are suspended in water. When viewed with a microscope, the pollen particles can be seen to be moving about irregularly. What causes this movement? A The temperat