PLMGSS Prelim 2024 4E Physics P1 QP + Ans

CANDIDATE NAME CLASS CLASS INDEX NUMBER CENTRE NUMBER INDEX NUMBER PHYSICS 6091/01 Paper 1 Multiple Choice 27 August 2024 Additional Materials: Multiple Choice Answer Sheet 1 hour READ THESE INSTRUCTIONS FIRST Write in soft pencil. Write your name, class, class index number on the separate Answer Sheet. Do not use staples, paper clips, glue or correction fluid. 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. This document consists of 22 printed pages. Paya Lebar Methodist Girls’ School (Secondary) Preliminary Examination 2024 Secondary 4 Express / G3

2 1 What is the typical size for a small atom? A 0.1 km B 0.1 cm C 0.1 μm D 0.1 nm 2 The height, h, of an oscillating mass is measured by a data logger. A graph of height, h, against time is shown below. What is the period of the oscillation? A 0.15 s B 0.30 s C 0.45 s D 0.60 s

3 [Turn Over 3 One object moves directly from P to R. In a shorter time, a second object moves from P to Q to R. Which statement about the two objects must be correct for the journey from P to R? A They have the same average speed. B They have the same average velocity. C They have the same displacement. D They travel the same distance. 4 A cyclist travels along a hilly road without using the pedals or brakes. Air resistance and friction are negligible. The speed-time graph of the cyclist is shown. At which point did he reach the bottom of the first hill?

4 5 When a constant force of 30 N is applied on an object of mass 3.0 kg, the block moves up a rough slope at constant speed. Which statement about the value of the frictional force on the object is true? A It is 0 N. B It is less than 30 N. C It is 30 N. D It is more than 30 N. 6 The table below shows the volume and density of water and alcohol respectively. liquid volume / m3 density / kg m−3 water 1.5 1000 alcohol 0.5 800 Water is mixed with alcohol. The total volume of the mixture is 2.0 m3. What is the density of the mixture? A 850 kg/m3 B 900 kg/m3 C 940 kg/m3 D 950 kg/m3

5 [Turn Over 7 The front wheel of a car is turned in a clockwise direction by the engine as the car accelerates towards the right, as shown in the diagram. There is a force of friction between the wheel and the road. Which row shows the correct direction of frictional force? direction of frictional force on wheel direction of frictional force on road A to the left to the left B to the left to the right C to the right to the left D to the right to the right 8 A uniform metre rule is pivoted at the 34.0 cm mark, as shown below. The rule balances when a 64 g mass is hung from the 4.0 cm mark. What is the mass of the metre rule? A 38 g B 44 g C 120 g D 136 g

6 9 The stability of a bus is tested by tilting it on a ramp. The diagram shows a bus that is just about to topple over. Where is the centre of gravity of the bus? 10 The system shown in the diagram contains a liquid. A downward force of 80 N is exerted on piston K. What will be the upward force exerted by the liquid on piston L? A 1 N B 4 N C 80 N D 1600 N

7 [Turn Over 11 A gas in a sealed cylinder is heated. Which quantity does not increase as the gas is heated? A the average number of gas molecules hitting the cylinder walls per second B the average kinetic energy of the gas molecules C the average speed of the gas molecules D the average distance between the gas molecules 12 The diagram shows a U-tube filled with mercury. The left arm is sealed, and the right arm is open. There is some trapped air in region X. Given that the atmospheric pressure is 760 mmHg, what is the pressure of the trapped air in region X? A 710 mmHg B 726 mmHg C 744 mmHg D 794 mmHg

8 13 The diagram shows a U-tube containing oil and water. Pressure at X and Y are the same. The density of water is 1.0 g/cm3. What is the density of the oil? A 0.25 g/cm3 B 0.50 g/cm3 C 0.75 g/cm3 D 0.90 g/cm3 14 A swimmer dives into a very deep pool at high speed. He slows down as he moves towards the bottom of the pool. What is the overall energy transfer as the diver moves downwards through the water? A gravitational potential store → kinetic store + internal store B gravitational potential store → kinetic store → internal store C kinetic store + gravitational potential store → internal store D kinetic store → gravitational potential store + internal store 15 The input power to a lamp is 6.0 W. The lamp wastes 2.7 J of energy in 3.0 s. What is the efficiency of the lamp? A 15 % B 45 % C 55 % D 85 % 16 When a liquid is cooled, its temperature changes while its volume shows negligible change. Which row shows the change in the kinetic and potential energies of the molecules? kinetic energy potential energy A decreases remains the same B decreases increases C increases remains the same D increases increases

9 [Turn Over 17 A student adds 37 g of ice at 0 °C to 100 g of water at 30 °C. The final temperature of the water and melted ice is 0 °C. The specific heat capacity of water is 4.2 J / (g °C). Assuming that there is n o heat loss to or gain from the surroundings , what is the specific latent heat of ice? A 47 J/g B 341 J/g C 4700 J/g D 12 600 J/g 18 Some of the liquid in a dish evaporates, as shown in the diagrams below. Which of the following statements are true? I. During evaporation, molecules that leave the liquid have higher energy. II. Molecules in the liquid have greater average kinetic energy before evaporation. III. During evaporation, molecules remaining in the liquid have higher energy. IV. Molecules remaining in the liquid have greater average kinetic energy after evaporation. A I and II B I and IV C II and III D III and IV

10 19 Graph 1 shows the variation with time of displacement at a fixed distance along a progressive wave. Graph 2 represents the same wave and shows the variation with distance of displacement at an instant in time. What is the speed of the wave? A 0.0033 m/s B 0.33 m/s C 3.0 m/s D 300 m/s