2022 JSS Phy Prelims P1

O JURONG SECONDARY SCHOOL 2022 GRADUATION EXAMINATION 2 SECONDARY 4 EXPRESS CANDIDATE NAME CLASS INDEX NUMBER PHYSICS 6091/01 Paper 1 Multiple Choice 31 August 2022 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 19 printed pages including this page.

2 6091/1/GE2/22 [Turn over] 1 A micrometer screw gauge is used to measure the thickness of a metal sheet. Diagram 1 shows the reading on the micrometer screw gauge when it is tightened with nothing between the jaws. Diagram 2 shows the reading taken with the metal sheet between the jaws. What is the thickness of the metal sheet? A 3.65 mm B 3.71 mm C 7.15 mm D 7.21 mm 2 An electromagnetic wave has a wavelength of 0.000 000 238 m. Which of the following is equivalent to the length of the wavelength? A 2.38 x 10-13 Mm B 2.38 x 10-5 mm C 2.38 x 103 nm D 2.38 m 3 A cyclist riding at a velocity of 5 m/s braked with uniform deceleration and stopped in 3 m. How long did she take to stop? A 0.6 s B 1.2 s C 1.3 s D 3.0 s

3 6091/1/GE2/22 [Turn over] 4 A coin and a feather are dropped from rest at the same time in a vacuum. The coin is released at a higher height than the feather. Before they reach the ground, which of the following statements is incorrect? A They have the same acceleration. B They have the same velocity at any instant. C They meet each other at some point in time. D They travel the same distance in the same amount of time. 5 The diagram shows a right-angled isosceles pathway, PQR. A man takes 10 s to walk from P to Q and 15 s to walk from Q to R. What is the average velocity of the man? A 0.28 m/s B 0.33 m/s C 0.40 m/s D 0.50 m/s 6 Two masses are joined by a light inextensible string and pulled by force F along a frictionless surface as shown in the figure below. What is the magnitude of the tensional force between the two masses? A 1 3 F B 2 3 F C F D 4 3 F m 2m F

4 6091/1/GE2/22 [Turn over] 7 Inertia is a measure of the A ability for objects to move. B ability for objects to stop. C reluctance for moving objects to stop. D reluctance for objects at rest to remain at rest. 8 Solid A of mass 12 g displaces the same volume of water as solid B of mass 8 g. What can be deduced about the densities of solids A and B? A both A and B have the same density B density of A is 11 2 times the density of B C density of A is 2 3 times the density of B D density of A is four times the density of B 9 Four forces act on a uniform rod. Which rod is in equilibrium? A B C D 4 N 3 N 2 N 5 N 1 m 1 m 1 m 2 N 5 N 3 N 4 N 1 m 1 m 1 m

5 6091/1/GE2/22 [Turn over] 10 A plane laminar has three holes drilled on it. At which quadrant is the centre of gravity of the lamina? 11 A diver is 15 m below sea level. Atmospheric pressure is 1.0 x 105 Pa. The density of sea water is 1020 kg/m 3 and the gravitational field strength g is 10 N/kg. What is the pressure acting on the diver? A 4.7 x 104 Pa B 5.3 x 104 Pa C 1.5 x 105 Pa D 2.5 x 105 Pa 2 N 5 N 3 N 4 N 1 m 1 m 1 m 3 N 4 N 5 N 2 N 1 m 1 m 1 m

6 6091/1/GE2/22 [Turn over] 12 A 5 cm mercury column traps a column of gas of 8 cm, in a glass tube. Atmospheric pressure is 75 cm Hg. What is the pressure of the trapped gas when the glass tube is inverted? A 70 cm Hg B 72 cm Hg C 80 cm Hg D 88 cm Hg 13 Potential energy is A the energy possessed by a moving body.

7 6091/1/GE2/22 [Turn over] B the energy possessed by an unstretched spring. C the energy released during boiling. D the energy within the forces of attraction between particles. 14 Three solar panels produce a total power of 2.0 kW. They have a total surface area of 7.2 m2. 1.0 m2 of each solar panel receives 800J of energy from the sun every second. What is the efficiency of the solar panels? A 12 % B 17 % C 34 % D 65 % 15 Which of the following correctly states the properties of solids, liquids and gases? solids liquids gases A do not flow easily flow easily do not flow easily B easily compressed easily compressed hard to compress C fixed shape no fixed shape no fixed shape D no fixed volume fixed volume no fixed volume

8 6091/1/GE2/22 [Turn over] 16 The diagram below shows four beakers of water. Which of the following beakers will a convection current be set up in the water? A 3 only B 1 and 2 only C 3 and 4 only D 1, 2 and 3 only 17 Which of the following containers is the best emitter of infrared radiation if the temperature of the surrounding is 25 C? 18 In calibrating a thermocouple thermometer, one of its junctions is kept in melting ice and the other in boiling water. The current reading on the galvanometer is 200 mA. If the junction in the boiling water is immersed in another substance and the reading is -20 mA, what is the temperature of the substance? A -20 C B -10 C C 10 C D 20 C

9 6091/1/GE2/22 [Turn over] 19 A heater supplies constant power to heat a substance from solid state as shown in the diagram. Which of the following statements is true about the substance? A The heat capacity of the gaseous substance is higher than the heat capacity of the liquid substance. B The internal potential energy of the substance decreases at QR. C The latent heat of fusion is higher than the latent heat of vaporisation. D The specific heat capacity of the solid substance is higher than the specific heat capacity of the liquid substance. 20 Which of the following is correct about boiling and evaporation? A Boiling occurs at any temperature whereas evaporation does not. B Boiling occurs throughout the entire liquid whereas evaporation does not. C Both processes are affected by the same factors. D Both processes increase the average internal kinetic energy of the liquid molecules.

10 6091/1/GE2/22 [Turn over] 21 The diagram shows two ducks M and N sitting on a water wave. A boat moves and creates a wave. Which row describes the movement of the ducks during the next half cycle of the wave? duck M duck N A only falls only rises B falls then rises rises then falls C rises then falls falls then rises D to the right to the left 22 The diagram shows the waveform of a sound wave in water. It is moving at a speed of 1500 m/s. What is the frequency of the sound wave? A 25 Hz B 38 Hz C 2500 Hz D 3800 Hz