2024 MSH S4 Physics Prelim Paper 1 and ANS

Class/ Index Number / Centre Number/ ‘O’ Level Index Number / Name MARIS STELLA HIGH SCHOOL PRELIMINARY EXAMINATION SECONDARY FOUR PHYSICS 6091/01 Paper 1 Multiple Choice 28 August 2024 1 hour Additional Materials: Optical Test Answer Sheet (OTAS) – 1 sheet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your class, index number, Centre number, O level index number and name in the spaces at the top of this page. 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 answer 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 question booklet. The use of an approved scientific calculator is expected, where appropriate. The total number of marks for this paper is 40. At the end of the examination, hand in the following separately: (1) Optical Test Answer Sheet (OTAS)
 (2) Question Paper This document consists of 17 printed pages.

2 1 A student studies some equations for his Physics Examination. power = work done / time force = mass x acceleration velocity = displacement / time How many different scalar quantities are there in all the equations? A 2 B 3 C 4 D 5 2 Which of the following equations is correct? A 43 N / mm2 = 4.3 x 10-2 N / m2 B 63 Hz = 6.3 x 109 GHz C 85 µm = 8.5 x 103 m D 123 nA = 1.23 x 10-7 A 3 A resultant force acts on an object and causes it to move in a straight line. The graph shows how the resultant force varies with time. Which graph is the speed-time graph for the object? A B C D

3 4 Block A and block B are connected by a light inextensible string. A force of 12 N acts on block A as shown. Given that the floor is smooth, what is the tension in the string connecting block A and block B? A 2.0 N B 4.0 N C 8.0 N D 12 N 5 Which of the following is not an example of an action -reaction pair based on Newton’s laws of motion? A A student pulling a bag forward, the bag pulling the student backwards. B Weight of a book resting on the table, and the normal contact force the table exerts on the book. C Driving wheel of a bicycle exerting friction on the road, and the road exerting friction on the wheel. D Earth pulling a skydiver with gravitational force, and skydiver pulling Earth with a gravitational force. 6 The weight of a rock on Venus is less than its weight on Earth. How do the mass of the rock and gravitational field strength on Venus compare with their respective values on Earth? mass of rock gravitational field strength A smaller smaller B smaller zero C same smaller D same same floor 12 N A 2.0 kg B 4.0 kg

4 7 A 4.0 m long uniform plank weighing 50 N balances on two pivots P and Q when a load of 40 N is placed at one end. What are the normal contact forces at points P and Q? normal contact force at P normal contact force at Q A 3 87 B 20 70 C 45 45 D 67 23 8 A non-uniform object is placed on an inclined plane. The object is just about to topple. Which position is most likely to be its centre of gravity? 9 Which of the following would most likely sink into soft mud? A a loaded truck with six wheels B a loaded truck with four wheels C an empty truck with six wheels D an empty truck with four wheels B A C D non-uniform object inclined plane 3.0 m 1.0 m

5 10 The diagram shows a cylinder fitted with two pistons X and Y of diameters 5.0 cm and 10.0 cm respectively. The piston X is pushed by a force of 12 N. What is the force exerted on piston Y? A 3.0 N B 6.0 N C 24 N D 48 N 11 The diagram below shows a manometer. What is the pressure of the enclosed air in the manometer? A 80 mmHg B 120 mmHg C 200 mmHg D 550 mmHg mercury

6 12 A car of mass 500 kg is at rest at point X on a slope, as shown. The car’s brakes are released and the car rolls down the slope with its engine switched off. At point Y , the car has moved through a vertical height of 30 m and has a speed of 11 m/s. What is the energy dissipated by frictional forces when the car moves from X to Y? A 3.0 × 104 J B 1.2 × 105 J C 1.5 × 105 J D 1.8 × 105 J 13 A 5.0 W lamp is switched on for 180 s. It transfers 600 J to the internal store (thermal) of the surroundings. What is the efficiency of the lamp? A 33 % B 43 % C 67 % D 70 % 14 When smoke particles are viewed under a microscope, they can be seen moving with Brownian motion. Which row describes and explains Brownian motion? description explanation A random air molecules bombard the smoke particles B random smoke particles bombard the air molecules C vibration air molecules bombard the smoke particles D vibration smoke particles bombard the air molecules 15 A gas is heated in a rigid sealed container. Which quantity does not change? A The average speed of the gas particles. B The average distance between the gas particles. C The average force exerted on the walls of the container by the gas particles. D The frequency of collisions on the walls of the container by the gas particles.

7 16 A type of insulation board used in the construction of houses in cold climate is shown below. Which part of the board reduces energy transfer to the surrounding by conduction and why? part reason A silver foil shiny surface is a good reflector of radiation B silver foil shiny surface is a poor emitter of radiation C styrofoam it contains air which is a poor thermal conductor D styrofoam it is white in colour which is a poor absorber of radiation 17 A solid of 2.0 kg is heated by a 2000 W heater. The graph of temperature against time for the substance is shown in the diagram. What is the specific latent heat of fusion of the solid? A 2.0 kJ / kg B 30 kJ / kg C 150 kJ / kg D 300 kJ / kg silver foil white styrofoam

8 18 An object O is placed in front of a mirror. Where must the observer position himself such that he will be able to see the image of O in the mirror? A between S and T B between R and S C between Q and R D between P and Q 19 The diagram represents the surface of a transparent liquid. Two rays of light are travelling within the liquid. They both reach the surface. The path of each ray is shown. What is the refractive index of this liquid? A 1.2 B 1.3 C 1.6 D 1.7

9 20 A converging lens L acts as a magnifying glass when an object AB is placed 4.0 cm from the centre of the lens. The image CD is 6.0 cm from A. Focal length of the lens is 6.0 cm. What are the characteristics of the image formed when the object is placed 12.0 cm away from the centre of the lens ? A virtual and same size as object B real and same size as object C virtual and diminished D real and diminished 21 The diagram shows a water wave traveling towards the right. Which of the following statements are not correct? I Particles at X and W are in phase. II Particle at X will move to W after a period. III Particle at Z will move up in the next instant. IV Wavelength of the wave is represented by XY. A I and III only B II and IV only C I, II and IV only D all the above W direction of wave X Y Z

10 22 The diagram shows a water wa