Jurong Prelim P1

O JURONG SECONDARY SCHOOL 2024 GRADUATION EXAMINATION SECONDARY FOUR CANDIDATE NAME CLASS INDEX NUMBER PHYSICS 6091/01 Paper 1 Multiple Choice 19 August 2024 1 hour Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Do not open this booklet until you are told to do so. Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name, class and index number on the answer sheet in the spaces provided. There are forty questions in this paper. Answer all the 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 Paper 1 [40 marks] This document consists of 18 printed pages including this page. [Turn over]

2 6091/1/4(EXP)/GE/24 1 What is the unit of work done expressed in base units? A kg m s2 B (kg m2) / s2 C kg / (m s2) D kg / (m2 s2) 2 The diagram shows an object of weight W attached to a string of tension T. The object is pulled to the left with a force F and it remains stationary. Which vector diagram represents the forces acting on the object? A B C D 3 Two equal forces of 10 N act on an object at the same time. Which of the following forces cannot be the resultant force acting on the object? A 0 N B 10 N C 20 N D 30 N 4 A boy travels 50 km in an hour. He then travels another 10 km in an unspecified amount of time. If his average speed for the entire journey is 10 m/s, what is his time taken to travel the 10 km? A 9 min B 12 min C 15 min D 40 min T W F

3 6091/1/4(EXP)/GE/24 5 The displacement-time graph of a body is shown. Which of the following shows the velocity-time graph of the body? A B C D 6 A stone is thrown vertically up from the top of a building and reaches the ground 4 seconds later. The velocity-time graph of the stone is as shown. What is the height of the building? A 5 m B 40 m C 45 m D 50 m time / s displacement / m 0 3 5 time / s velocity / m s-1 0 3 5 time / s velocity / m s-1 0 3 5 time / s velocity / m s-1 0 3 5 time / s velocity / m s-1 0 3 5 velocity / m s-1 time / s 0 10 1 4 -30

4 6091/1/4(EXP)/GE/24 7 A few objects are placed on different planets. From the information below, which two objects are placed on the same planet? object mass / kg weight / N 1 20 120 2 30 135 3 40 180 4 50 175 A 1 and 2 B 1 and 3 C 2 and 3 D 3 and 4 8 Ahmad and Peter stand on skateboards and are stationary. They are holding on to a piece of rope. What happens when Peter pulls the rope? A Ahmad moves towards Peter. B Ahmad and Peter move towards each other. C Both Ahmad and Peter move towards the left. D Both Ahmad and Peter move towards the right. Ahmad Peter

5 6091/1/4(EXP)/GE/24 9 A student wants to find the centre of gravity of a triangular lamina PQR. He makes a small hole at Q. He then suspends the lamina using a pin through the hole at Q, so that the lamina swings freely. Next, he hangs a plumb line from the pin at Q. He marks the position of the plumb line on the lamina. To determine the location of the centre of gravity, the student then repeats the experiment but with one change. What is the change? A He suspends the lamina from the hole at Q, with R on the left and P on the right. B He suspends the lamina with a pin through a hole at R. C He uses a larger mass for the plumb line. D He uses a longer plumb line. P Q R lamina plumb line

6 6091/1/4(EXP)/GE/24 10 The following objects are held stationary by an applied force F. G is the centre of gravity of the object. The line of action of the weight of the object acts through G. Which of the following objects will topple when F is removed? A B C D 11 An upward force F is applied to the larger piston of a hydraulic press as shown. Which downward force acts on the smaller piston? A F 16 B F 4 C 4F D 16F G F G F G F G F piston of radius 10 cm piston of radius 40 cm F

7 6091/1/4(EXP)/GE/24 12 The diagram shows a gas trapped in the left arm of a manometer containing mercury. If the atmospheric pressure is 760 mm Hg, what is the pressure of the trapped gas? A 70 mm Hg B 150 mm Hg C 910 mm Hg D 1210 mm Hg 13 A box is pushed 10 m along a horizontal surface by a force of 12 N. The frictional force acting on the box is 5 N. How much of the work done is transferred to the internal store and kinetic store of the box respectively? internal store / J kinetic store / J A 50 70 B 50 120 C 70 50 D 70 120 gas mercury 70 mm 150 mm 300 mm 10 m 12 N 5 N

8 6091/1/4(EXP)/GE/24 14 A windmill raises water from a well. The depth of the well is 6 m. The windmill raises 500 kg of water every day. What is the power extracted from the wind to perform this task? Assume the windmill is 100 % efficient. A 0.035 W B 0.35 W C 2.1 W D 21 W 15 A sample of gas is heated in a sealed container of fixed volume. Which of the following does not increase? A average distance between the gas molecules B average kinetic energy of the gas molecules C force due to the collisions between the gas molecules and the container walls D number of collisions per second by the gas molecules on the container walls 16 Why do gases have no fixed shaped and size? A Gases have large volumes. B Gases have low densities. C The intermolecular forces between the particles are weak. D The spaces between the particles are very wide.

9 6091/1/4(EXP)/GE/24 17 Three glasses of water of the same temperature are placed side by side touching each other as shown. Glass P contains 0.3 kg of water, glass Q contains 0.5 kg of water and glass R contains 0.1 kg of water. Which of the following statements is correct? A Heat flows from P to Q to R. B Heat flows from Q to P and from Q to R. C Heat flows in all direction. D There is no net heat flow between the three glasses. 18 A student wants to set up a convection current in the container of water as shown. Which of the following arrangements would allow this? A cooling at X B cooling at Y C heating at Y D heating at Z P Q R 50 C 50 C 50 C X Y Z

10 6091/1/4(EXP)/GE/24 19 Two similar tin cans are filled with boiling water. One can has a black surface while the other is white. The temperature of the water in each can is taken every minute. Which graph shows the results obtained after a long time? A B C D 20 Which of the following describes the difference between heat capacity and specific heat capacity? heat capacity specific heat capacity A involves 1 kg of material does not involve 1 kg of material B involves a change in temperature of 1 C does not involve a change in temperature of 1 C C does not involve 1 kg of material involves 1 kg of material D does not involve a change in temperature of 1 C involves a change in temperature of 1 C black can white can thermometer time / min temperature / C white can black can time / min temperature / C