2024 CHS Sec 4 Physics Prelim Paper 1

Name: Index Number: Class: CATHOLIC HIGH SCHOOL Preliminary Examination Secondary 4 (O-Level Programme) PHYSICS 6091/01 Paper 1 Multiple Choice 28 August 2024 1 hour Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use paper clips, glue or correction fluid. Write your name, index number and class on this paper and 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. For examiner’s use only: Total / 40 Overall Marks % Paper 1 40 30% Paper 2A 70 50% Paper 2B 10 Paper 3 40 20% This document consists of 17 printed pages.

2 1 A length of copper wire is labelled: length 0.50 m and diameter 0.50 mm. Which instrument(s) is/are most suitable to measure accurately the volume of the copper wire? A measuring cylinder and digital calipers B metre rule and digital calipers C metre rule and digital micrometer D tape measure and digital micrometer 2 The diagram shows how to find the resultant R of a 3 N and 4 N force acting at a point. The angle between the two forces can be any value from 0° to 180°. Which value of R is not possible? A 1 N B 4 N C 7 N D 10 N

3 3 A ball is thrown vertically up from the top of a building 20 m high with an initial velocity of 20 m / s. The displacement of the ball is measured from the point that the ball is thrown, with an upward displacement taken as positive. Which of the following graphs represents the displacement of the ball with time t? 4 A car moving at 40 km / h speeds up with constant acceleration for 3 minutes, reaching a final speed of 80 km / h. What is the distance travelled during this time? A 3.0 km B 6.0 km C 180 km D 360 km 5 An object of mass M travelling to the right with velocity 2v collides with another object of mass 2M travelling to the left with velocity v. It can be assumed there are no energy transfers from the objects to the surface they are moving on and to the surrounding air. Which statement is true about both objects during the collision? A The inertia of each object changes. B The sum of the total energy in their stores decreases. C They experience a deceleration of the same magnitude. D They experience a force of the same magnitude.

4 6 A car is travelling on a flat road with constant velocity. It can be assumed that there is negligible air resistance acting on the car during its motion. How many forces are acting on the car? A 0 B 2 C 3 D 4 7 A uniform plank of weight 60 N is 2000 mm long. It rests on a support that is 600 mm from end E. At what distance from end E must a 160 N weight be placed in order to balance the plank? A 150 mm B 225 mm C 375 mm D 450 mm 8 A non-uniform object is placed on an inclined plane as shown below. If the object is just about to topple, which position is its centre of gravity?

5 9 The diagram shows a hydraulic brake system used in vehicles. A tube links the master piston to the slave piston. Both pistons are cylindrical and the diameter of the slave piston is twice that of the master piston. The driver presses down on the pedal and a force of 450 N is applied on the master piston. What is the force applied by the slave piston to the brake pad? A 113 N B 225 N C 900 N D 1 800 N 10 A U-tube containing oil and liquid X is shown in the figure below. The two liquids do not mix. The density of oil is 900 kg / m3. What is the density of liquid X? A 750 kg / m3 B 1 000 kg / m3 C 1 080 kg / m3 D 1 200 kg / m3

6 11 The diagram shows a block being pulled up a rough ramp by a rope. The block has weight W and the rope is pulled with force F. The block moves a distance PR along the ramp and is raised through a height QR. What is the equation for the work done on the block by the rope? A force F × distance PR B force F × distance QR C weight W × distance PQ D weight W × distance QR 12 The diagram below shows a n arrow being shot upwards, reaching its maximum height after some time. Air resistance acts on the arrow during its flight. Which one of the following correctly states the energy transfers taking place just before the arrow reaches its maximum height? energy in gravitational potential store (GPE) energy in kinetic store (KE) GPE + KE A decreases increases decreases B decreases increases unchanged C increases decreases decreases D increases decreases unchanged

7 13 A student is studying Brownian motion. Using a microscope, she observes smoke particles in a glass container, illuminated by a strong light. The smoke particles move in a zig-zag path, constantly changing speed and direction. What happens to the smoke particles, if the air in the container is heated? A They change direction more frequently. B They increase in volume. C They move faster than air molecules in the container. D They move further apart. 14 The list below gives three properties of different states of matter. 1 They are incompressible. 2 They can flow. 3 They completely fill the container they are placed in. Which properties are correct for liquids? A 1 and 2 only. B 2 and 3 only. C 1 and 3 only. D 1, 2 and 3. 15 Two objects, A and B, are placed in physical contact with one another. They have the same temperature. Assume there is no energy transfer to the surrounding media. Which statement is correct? A There is energy transfer from all molecules in A to all molecules in B. B There is energy transfer from some molecules in A to some molecules in B, as well as from some molecules in B to some molecules in A. C There is energy transfer from some molecules in A to some molecules in B, but no energy transfer from some molecules in B to some molecules in A. D There is no energy transfer between any molecule in A to any molecule in B.

8 16 The graph shows the change in temperature of equal masses of two substances P and Q when they are heated separately by heaters of identical power. Which of the following statements is correct? A The energy required to raise the temperature of P from room temperature to boiling point is more than that of Q. B The melting point of P is lower than Q. C The specific heat capacity of P in solid state is larger than that of Q. D The specific latent heat of fusion of P is larger than that of Q. 17 The temperature of a body increases by 1 °C. Its state remains the same. Which other quantity of the body also increases? A heat capacity B internal energy C latent heat D potential energy of molecules 18 Which of the following quantities decreases when evaporation of water in a beaker occurs? A average kinetic energy of water molecules B average potential energy of water molecules C humidity of air above water surface D specific heat capacity of remaining water in beaker 19 Which of the following processes do es not show that waves transfer energy without transferring matter? A infra-red radiation emitted from the Sun to a planet with no atmosphere B sound from a