NTSS Prelim P1

NEW TOWN SECONDARY SCHOOL PRELIMINARY EXAMINATION 2024 Secondary 4 Express NAME CLASS INDEX NO. PHYSICS 6091 [Revised]/01 Paper 1 23 Aug 2024 1 hour 0800 – 0900 Additional Materials: Multiple Choice Answer Sheet (OTAS) READ THESE INSTRUCTIONS FIRST Write your name, class and index number in the spaces at the top of the page. Write in dark blue or black pen. Do not use staples, paper clips, highlighters, glue or correction fluid. There are forty questions in 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 (OTAS). Read the instructions on the Answer Sheet (OTAS) 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. Take the value of the gravitational field strength (g) on Earth to be 10 N/kg. For Examiner’s Use Total / 40 This document consists of 18 printed pages and 0 blank page.

2 1 Which row shows the approximate diameter of an atom and the average diameter of the Earth? diameter of an atom diameter of the Earth A 0.5 µm 10 Mm B 0.5 µm 10 Gm C 0.5 nm 10 Mm D 0.5 nm 10 Gm 2 A student is given a wire of diameter less than 0.2 mm. Its length is approximately 18 cm. He is tasked to find the volume of the wire. Which pair of instruments would be most suitable for finding the volume of the wire? A electronic balance and micrometer B metre rule and micrometer C metre rule and vernier calipers D micrometer and vernier calipers 3 A car driver presses the accelerator sharply when the traffic lights turn green. The force applied on the car varies with time as shown in the graph below. Which graph shows the variation with time of the car’s speed? A B C D force time 0 speed time speed time speed time speed time 0 0 0 0

3 4 A bowling ball and a feather are dropped from the top of a high building. They are released at the same time. The bowling ball reaches the ground first. Which statement explains this? A The acceleration of free-fall is greater for the bowling ball as compared to the feather. B The bowling ball reaches a greater speed before the air resistance acting on it balances its weight. C The gravitational field causes the feather to accelerate slower than the bowling ball. D There is a smaller force of air resistance on the feather. 5 Which moving body has a resultant force acting on it? A a diver rising vertically through water at constant speed B a parachutist descending vertically at terminal velocity C a train going up a straight incline at constant speed D an aircraft circling an airport at constant speed 6 Ahmad hung a ball to the ceiling of his car using a thin thread. The figure shows the ball when the car is at rest. What is the position of the ball when his car starts moving to the right? A B C D

4 7 A uniform beam of 5.00 m has a weight of 140 N, is hung by two ropes at its ends. A wooden block of mass of 30.0 N is placed on the beam at 0.800 m from rope X. What is the tension in each rope? tension in rope X/ N tension in rope Y/ N A 4.8 25.2 B 25.2 4.8 C 74.8 95.2 D 95.2 74.8 8 The diagram below shows a wine bottle placed in a wooden holder. The bottle and the holder are in equilibrium. Which of the following statements is true about the set-up? A The centre of gravity of the bottle is directly above the base of the wooden holder. B The centre of gravity of the bottle and that of the wooden holder are at the same point. C The centre of gravity of the wooden holder is directly above the base of the wooden holder. D The centre of gravity of the bottle and the wooden holder is directly above the base of the wooden holder. 0.800 m 5.00 m X Y beam wine bottle wooden holder base 30 N

5 9 A student has to find the density of a cork by using a measuring cylinder. The volume reading at each stage is shown in the figures below. The mass of the pebble and the cork are 98.0 g and 4.00 g respectively. What is the density of the cork? A 0.0400 g/cm3 B 0.0800 g/cm3 C 0.100 g/cm3 D 0.200 g/cm3 10 The height of a mercury barometer is h when the atmospheric pressure is 100 000 Pa. What is the pressure at X? A 20 000 Pa B 80 000 Pa C 120 000 Pa D 180 000 Pa

6 11 Three blocks A, B, and C are each pushed by equal forces, F, across a smooth horizontal floor for a distance of 2 m. The mass of block A is greater than block B, and the mass of block B is greater than block C. Which block would have the greatest amount of kinetic energy at the end of the 2 m push? A Block A B Block B C Block C D All blocks will have the same kinetic energy 12 A catapult launches a 3 kg ball into a castle. The ball leaves the catapult at a height of 1m and with a speed of 15 m/s. A target is placed 5 m at the top of the castle. What is the speed of the ball when it hits the target? Assume there is no air resistance. A 9.80 m/s B 11.1 m/s C 12.0 m/s D 13.0 m/s 2m 2m 2m block A block B block C F F F

7 13 In a Brownian motion experiment, tiny smoke particles are observed to move in an uneven zig-zag manner. What is the reason for this? A Air molecules bombard the smoke particles randomly. B The average internal energy of the air molecules is changing. C The smoke particles are too light. D There is convection current in the air. 14 A fixed shaped sealed container filled with gas is heated. Which property of the gas must also increase? A average force of particles acting on container walls B density of gas C distance between gas particles D number of gas particles in container 15 A double-walled glass vessel is shown below. (Yuying 2019) How should surfaces Q, R and S be painted to minimize heat lost by hot liquid through radiation? Q R S A silver black black B black black black C silver silver silver D black black silver

8 16 Two liquids at the same temperature, alcohol and water, are spilt on the hand. The hand with alcohol feels colder because alcohol A evaporates more readily than water. B has a higher boiling point than water. C has a higher specific latent heat of vaporisation than water. D is a worse conductor of heat than water. 17 The figure shows steam passing into a jug to warm up some cold water. 40.0 g of pure steam enters at 100 oC into the jug of water. Eventually, the water in the jug reaches a temperature of 90.0 oC. The specific heat capacity of water is 4.20 J/(g oC) and the specific latent heat of vaporization of water is 2250 J/g. You can ignore any heat loss to the atmosphere and the jug. What is the total energy lost by steam in condensing to water at 100 oC and decreasing its temperature to 90.0 oC? A 1680 J B 91700 J C 1050