2024 BSS 4E Physics P1 Final

O BARTLEY SECONDARY SCHOOL PRELIMINARY EXAMINATION CANDIDATE NAME CLASS INDEX NUMBER PHYSICS 6091 Secondary 4 27 Aug 2024 Paper 1 Multiple Choice 1 hour Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write your class, register number and name on all the work you hand in. Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Section A There are forty questions in this section. 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. This document consists of 20 printed pages. Set By: QSR

2 BSS/24/Preliminary Examination/4E Physics 1 Which quantity is a vector? A current B displacement C speed D temperature 2 A computer memory stick is labelled as having a storage capacity of 128 TB. The letter B stands for byte, which is a unit. What is the equivalent storage capacity? A 1.28  108 B B 1.28  1011 B C 1.28  1014 B D 1.28  1017 B 3 A ball is released from rest above a horizontal surface. The graph shows how the velocity of the bouncing ball varies with time. At which point on the graph does the ball reach its maximum height after the first bounce? time velocity

3 BSS/24/Preliminary Examination/4E Physics [Turn over 4 An object falls freely from rest in a vacuum. The graph shows the variation with time t of the velocity v of the object. Which graph, using the same scales, represents the object falling in air? A B C D 5 A car of mass 750 kg has a horizontal driving force of 2.0 kN acting on it. It has a forward horizontal acceleration of 2.0 m/s2. What is the resistive force acting horizontally? A 0.50 kN B 1.5 kN C 2.0 kN D 3.5 kN resistive force driving force

4 BSS/24/Preliminary Examination/4E Physics 6 A box rests on the Earth, as shown. Newton’s third law describes how forces of the same type act in pairs. One of the forces of a pair is the weight W of the box. Which arrow represents the other force of this pair? 7 Four objects are moving. Which object has a zero resultant force acting on it? A the object moving at a decreasing speed B the object moving at an increasing speed C the object moving at a constant speed in a circle D the object moving at a constant speed in a straight line 8 The diagram shows a heavy non -uniform wooden plank resting on two supports which act as pivots (not to scale). Three forces F1, F2 and F3 are acting on the plank. The plank is in equilibrium. Which statement is correct? A F1 is larger than F2. B F2 is larger than F1. C The sum of F1 and F2 is twice of F3. D F3 is larger than the sum of F1 and F2.

5 BSS/24/Preliminary Examination/4E Physics [Turn over 10 A rock of mass 40 kg is released from rest from a height of 20 m above the surface of a planet. The rock has a kinetic energy of 32 kJ when it hits the surface of the planet. The planet does not have an atmosphere. What is the weight of the rock on the surface of the planet? A 1.6 N B 400 N C 1.6 kN D 8.0 kN 11 Which two physical quantities must be used to calculate the power developed by a student running up a flight of steps? A force exerted and the vertical height of the steps only B force exerted and the time taken only C work done and the vertical height of the steps only. D work done and the time taken only 9 The diagram shows a mercury barometer. A liquid which is less dense than mercury exists above the mercury column. This liquid does not mix with mercury. Given that the atmospheric pressure is 76 cm Hg, the density of liquid is 1200 kg/m 3 and the density of mercury is 13600 kg/m3, determine height X of the liquid column. A 2.0 cm B 22.7 cm C 26.0 cm D 76.0 cm vacuum liquid mercury 74 cm X

6 BSS/24/Preliminary Examination/4E Physics 12 Smoke particles in a transparent box are observed using a microscope. A small point of light is seen to move around as shown. When the temperature in the box is raised, what change can be observed under the microscope? A The small point of light changes direction more frequently. B The small point of light glows brighter. C The small point of light increases in size. D The small point of light moves slower. 13 A piston is supported by gas trapped in a cylinder. A weight is put on the piston. The volume of gas supporting the piston decreases but the temperature of the gas is unchanged. What happens to the molecules? A They have more kinetic energy. B They move more slowly. C They hit the piston more frequently. D They will become smaller in size.

7 BSS/24/Preliminary Examination/4E Physics [Turn over 14 A house designed to keep warm in winter is to be thermally insulated to reduce thermal energy loss and reduce fuel costs. Which type of thermal insulation pays back the cost of installation in the shortest time? A cavity wall insulation B double glazing C draught proofing D loft insulation 15 Cooling fins are used in many devices such as refrigerators and car radiators. Below are three statements about cooling fins. statement 1 The cooling fins are made of metal to ensure that thermal energy is being radiated quickly to the environment. 2 The cooling fins have a large surface area for heat to be dissipated quickly to the environment through convection and radiation. 3 Cooling fins are usually painted white to increase the rate of radiation to the surroundings. Which statement(s) about the cooling fins is/are correct? A 1 and 2 B 2 only C 2 and 3 D 1, 2 and 3

8 BSS/24/Preliminary Examination/4E Physics 16 The diagram shows a graph of temperature against time when 0.50 kg of salt is being heated. If the salt is heated at a constant rate of 175 W, what is the specific latent heat of fusion of the salt? A 1.4 × 103 J/kg B 2.1 × 104 J/kg C 8.4 × 104 J/kg D 1.4 × 105 J/kg 17 Which of the following could increase the rate of evaporation of a liquid? 1 decreasing the humidity surrounding the liquid 2 decreasing the surface area of the liquid 3 increasing the mass of the liquid 4 increasing the temperature of the liquid A 1 and 2 B 1 and 4 C 2 and 3 D 1, 3 and 4 Temperature / °C Time / s 0 30 70 300 700

9 BSS/24/Preliminary Examination/4E Physics [Turn over 18 A longitudinal wave of period 2.0 s passes along a spring. The diagram below shows the position of coils at a particular time. Which of the following shows the wavelength of the wave above and the speed of the wave? wavelength / cm speed of wave / cm/s A 7.5 15 B 7.5 30 C 10 5.0 D 10 7.5 19 A transverse wave travels along a rope. The diagram shows the rope at time t = 0. The wave is travelling from left to right. The period of the wave is T. One particle of the rope is labelled X. Which graph shows the variation with time of the displacement of particle X between t = 0 and t = 2T?