2024 Crescent P1 P2 QP + MS

This paper consists of 18 printed pages (including cover page). READ THESE INSTRUCTIONS FIRST Write your name, index number and class in the spaces provided at the top of this page and on the optical answer sheet. Do not use staples, paper clips, highlighters, glue or correction fluid. 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 optical 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. CRESCENT GIRLS’ SCHOOL SECONDARY FOUR PRELIMINARY EXAMINATION PHYSICS 6091/01 Paper 1 28 August 2024 1 Hour Class: Register No: Name:

2 24/S4/6091  Crescent Prelim 1 What is the typical diameter of a basketball? A 24 μm B 24 mm C 24 cm D 24 dm 2 The diagram shows the resultant R of a 3.0 N force and a 4.0 N force that acts at a point P. The angle between the 3.0 N force and the 4.0 N force can be any value from 0 o to 90 o . Which value of R is not possible? A 4.0 N B 5.0 N C 6.0 N D 7.0 N 3 The speed-time graph shows the motion of an object. How far does the object travel when it is moving at constant speed? A 25 m B 50 m C 75 m D 88 m

3 24/S4/6091  Crescent Prelim 4 The graph shows how the speed of an object varies with time. At which labelled time is the acceleration the greatest? 5 When a man is standing in an ascending lift, the magnitude of the force exerted on the man’s feet by the lift floor is always equal to the magnitude of _________________ . A his weight B the tension in the cable supporting the lift C what it will be when the lift is stationary D the force exerted on the lift floor by his feet 6 A student releases a tennis ball from a tall building. What happens to the velocity and to the acceleration of the ball during the first few seconds after release? velocity acceleration A decreases decreases B decreases increases C increases decreases D increases increases

4 24/S4/6091  Crescent Prelim 7 A uniform beam is pivoted at its centre. Two weights are placed on the beam in the positions shown and the beam is balanced by an upward force F. What is the size of F? A 6 N B 12 N C 30 N D 60 N 8 When a car turns a corner at speed, it risks toppling over. Two factors affecting the stability of a car are the height of its centre of mass and the distance between its front wheels. Which factors make the car most stable? centre of mass distance between front wheels A high small B high large C low small D low large 9 The diagram shows a simple model of the braking system of a car. A force of 20 N is applied to piston P. As a result, there is a force F on piston Q. Piston P has an area of 5.0 cm2 and piston Q has an area of 25 cm2. What is the force F? A 4.0 N B 20 N C 100 N D 500 N

5 24/S4/6091  Crescent Prelim 10 The diagram shows a manometer with one side connected to a gas cylinder and the other side open to the atmosphere. What conclusion can be made using only the information from the liquid levels in the manometer? A The density of the gas is less than the density of air. B The density of the gas is greater than the density of air. C The pressure of the gas is less than atmospheric pressure. D The pressure of the gas is greater than atmospheric pressure. 11 A rocket of total mass M is travelling at a speed v. The engine of the rocket is fired and fuel is used up. The mass of the rocket decreases to M / 2 and its speed increases to 2v. What happens to the kinetic energy of the rocket? A It halves. B It stays the same. C It doubles. D It increases by a factor of four. 12 A worker lifts eight slabs from the ground on to the back of a lorry 1.5 m high. The total time taken is 48 s and each slab weighs 200 N. How much useful power does the worker produce? A 6.3 W B 50 W C 500 W D 2400 W

6 24/S4/6091  Crescent Prelim 13 The diagrams represent the molecules in two different states of matter. The arrows show the motion of the molecules. What is state 1, and what is state 2? state 1 state 2 A gas liquid B gas solid C liquid gas D liquid solid 14 A gas is in a sealed container of constant volume. The gas is heated and the pressure of the gas on the walls of the container increases. How do the particles of the gas cause this increase in pressure? A They expand. B They hit each other more frequently. C They hit the container more frequently. D They vibrate faster.

7 24/S4/6091  Crescent Prelim 15 A girl is outdoors. She warms her hands by holding them near a fire, as shown. How does the heat from the fire reach her hands? A conduction only B conduction and convection C convection and radiation D radiation only 16 The tubes inside solar heating panels use the Sun’s radiation to warm water. Why are the tubes painted black? A Black surfaces absorb radiation well. B Black surfaces conduct heat well. C Black surfaces emit radiation well. D Black surfaces reflect radiation well. 17 The same quantity of energy is transferred to the internal store of two objects X and Y. The temperature rise of object X is less than the temperature rise of object Y. What accounts for this difference? A X has a larger specific heat capacity than Y. B X has a larger heat capacity than Y. C Y has a larger specific heat capacity than X. D Y has a larger heat capacity than X.

8 24/S4/6091  Crescent Prelim 18 A student adds 37 g of ice at 0 o C to 100 g of water at 30 o C. All the ice melts and the final temperature of the mixture is 0 o C. No thermal energy is transferred to, or gained from, the surroundings. The specific heat capacity of water is 4.2 J/(g o C). What is the specific latent heat of ice? A 47 J/g B 341 J/g C 4700 J/g D 12600 J/g 19 The diagrams show two water waves P and Q that are travelling at the same speed on the surface of a pond. The diagrams are to the same scale. Which wave has the greater amplitude and which wave has the greater frequency? greater amplitude greater frequency A P P B P Q C Q P D Q Q

9 24/S4/6091  Crescent Prelim 20 Two sounds X and Y are produced by loudspeakers. The amplitude and frequency of each sound wave are given in the table. amplitude / mm frequency / Hz X 1.3 475 Y 2.0 235 How does sound Y compare with sound X? A Y is quieter and has a higher pitch B Y is quieter and has a lower pitch C Y is louder and has a higher pitch D Y is louder and has a lower pitch 21 The diagram shows the electromagnetic spectrum, in order of increasing wavelength. Three types of radiation, P, Q and R, are missing from the spectrum diagram. γ-rays X-rays P visible light Q microwaves R Which types of electromagnetic radiation are represented by P, Q and R? P Q R A infra-red radio waves ultraviolet B infra-red ultraviolet radio waves C ultraviolet infra-red radio waves D ultraviolet radio waves infra-red

10 24/S4/6091  Crescent Prelim 22 The diagram shows a ray of light travelling in a substance P. The ray reaches a boundary with a substance Q. Total internal reflection occurs at the boundary. Which row contains correct statements about angle X and about the optical density of substance Q? angle X optical density of substance Q A smaller than the critical angle less dense than substance P B smaller than the critical angle more dense than substance P C greater than the critical angle less dense than substance P D greater than the critical angle more dense than substance P