Tampines 2022 4N Sci Phy Prelim P1

This document consists of 7 printed pages © TPSS/5105/01/2022/SEC4/PRELIMS P TAMPINES SECONDARY SCHOOL Secondary Four Normal Academic PRELIMINARY EXAMINATION 2022 NAME CLASS REGISTER NUMBER SCIENCE (PHYSICS) 5105/01 Paper 1 Multiple Choice 01 August 2022 Papers 1 and 2: 1 Hour 15 minutes Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your name, class and register number on the Answer Sheet in the spaces provided unless this has been done for you. There are twenty 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. Answers to Paper 1 and Paper 2 must be handed in separately. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. You are advised to spend no longer than 30 minutes on Paper 1. You may proceed to answer Paper 2 as soon as you have completed Paper 1. Any rough working should be done in this booklet. The use of an approved scientific calculator is expected, where appropriate. [Turn over NA

2 distance time distance time distance time time distance 1 What is the reading of the vernier callipers shown below? A 4.40 cm B 4.50 cm C 5.40 cm D 5.54 cm 2 What should be used to measure the thickness of a thread as accurately as possible? A ruler B measuring cylinder C vernier calipers D micrometer screw gauge 3 Which of the following distance-time graphs shows that the speed of an object is increasing? A B C D

3 4 An experiment was conducted to investigate the friction between a moving wooden block and the horizontal, flat surface of a bench. The mass of the block is 2 kg while the frictional force on the bench is 2 N. Which of the following statements best describes the acceleration of the block when the applied force is increased from 2 N to 10 N? A The acceleration increases from 1 m/s2 to 4 m/s2. B The acceleration increases from 0 m/s2 to 4 m/s2. C The acceleration decreases from 4 m/s2 to 1 m/s2. D The acceleration decreases from 4 m/s2 to 0 m/s2. 5 The diagram shows a squared-shaped tile hanging loosely on a nail. Which of the following best indicate the centre of gravity of the tile? 6 A uniform beam is pivoted at its centre of mass. It is acted upon by two forces as shown. What is the resultant moment about the pivot? A 25 Ncm anti-clockwise B 25 Ncm clockwise C 175 Ncm anti-clockwise D 175 Ncm clockwise 2 kg applied force frictional force of 2 N

4 7 A car of mass 900 kg moves from point X to point Y along a section of level road, down a hill, and along another section of level road. The gravitational field strength, g is 10 N/kg. The diagram shows the distances moved. What is the change in gravitational potential energy of the car in moving from point X to point Y? A 180 000 J B 360 000 J C 540 000 J D 1 080 000 J 8 Four students lift weights through equal distances. A coach records how long it takes for them to do 3 lifts each. The table shows the results. student weight lifted / N time taken / s A 45 5 B 45 10 C 90 5 D 90 10 Which student produces the most power? 9 Which of the following happens when a fixed mass of gas stored in a rigid container is heated? A The density of the gas increases. B The gas condenses. C The volume of the gas increases. D The average speed of the gas molecules increases. 30 m 30 m 60 m 40 m X Y

5 10 Which of the following factors can increase the rate of evaporation of a liquid? A increase the temperature of the liquid B increase the external pressure C increase the humidity of air outside D decrease the surface area of the liquid 11 The following graph shows the cooling curve of a beaker of liquid. Which section of the graph is the beaker containing a mixture of liquid and solid? A U and V B W and X C X and Y D Y and Z 12 Which of the following statements best describes a longitudinal wave? A The particles are moving randomly. B The particles are oscillating about a circular path. C The particles are vibrating along the direction of wave travel. D The particles are vibrating perpendicular to the direction of wave travel. C W V U X Z temperature / C W V U X Z Y time / min

6 13 Gamma rays, microwaves and ultra-violet rays are all part of the electromagnetic spectrum. What is the correct order of increasing wavelength? shortest wavelength longest wavelength A gamma rays ultra-violet rays microwaves B gamma rays microwaves ultra-violet rays C microwaves ultra-violet rays gamma rays D ultra-violet rays microwaves gamma rays 14 Which component from the electromagnetic spectrum is used to help the human body to produce Vitamin D and to detect counterfeit money? A ultra-violet rays B radio waves C infra-red radiation D gamma rays 15 The diagram below shows a trace for a note emitted by a musical instrument. If the same note is played again, but more loudly, how will the trace change? A The peaks will be higher. B The peaks will be lower. C The peaks will be closer together. D The peaks will be further apart. 16 A 2.0 m long wire with a cross-sectional area of 4.0 mm2 has a resistance of 8.0 . What is the resistance of the same type of wire which is 8.0 m long and has a cross sectional area of 8.0 mm2? A 2.0 Ω B 4.0 Ω C 8.0 Ω D 16.0 Ω

7 17 A current of 0.60 A flows through a light bulb. What is the amount of charges flowing through the bulb in 10 seconds? A 0.06 C B 1.70 C C 6.00 C D 16.7 C 18 How much energy is used up by a 2.0 W bulb with 3.0 V voltage across it in one minute? A 2.0 J B 3.0 J C 120 J D 180 J 19 Why do we earth an electrical appliance? A To prevent the fuse from blowing. B To prevent the power supply from overloading. C To avoid having a current flowing through our body. D To avoid excess current flowing through the appliance. 20 Three identical lamps and a cell are connected in a circuit as shown. Which pair of equations is correct for this circuit? potential difference current A V3 = V1 + V2 I = I1 + I2 + I3 B V = V1 + V2 I = I1 + I2 C V = V2 + V3 I = I1 + I3 D V = V3 I = I2 + I3