SCGS 2022 Prelim P1

SINGAPORE CHINESE GIRLS’ SCHOOL PRELIMINARY EXAMINATION 2022 SECONDARY FOUR PHYSICS PAPER 1 Multiple Choice Monday 1 Hour 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 index number on the Question Paper and Answer Sheet in the spaces provided. There are forty questions in this paper. Answer all questions. For each question, there are four possible answers, A, B, C, 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. Take g = 10 ms-2 or 10 Nkg-1 unless specified otherwise. This question paper consists of 24 printed pages CANDIDATE NAME CLASS REGISTER NUMBER

2 1 A student is given a reel of wire of diameter less than 0.2 mm and is asked to find the density of the metal. Which pair of instruments would be most suitable for finding the volume of the wire? A Balance and micrometer B Metre rule and micrometer C Metre rule and vernier calipers D Micrometer and vernier calipers 2 The diameter of a solid metal sphere is measured using a micrometer screw gauge. The diagram shows an enlargement of the shaft of the micrometer screw gauge when taking the measurement. The mass of the sphere is 0.450 g. What is the density of the metal used to make the sphere? A 965 kg m–3 B 1340 kg m–3 C 7720 kg m–3 D 10 700 kg m–3 3 4 40 30 20

3 3 Paths are laid as shown between points X, Y and Z. A person walks along the paths from X to Y to Z and then back to X. What is the value of the total displacement and of the total distance travelled? total displacement / m total distance travelled / m A 0 0 B 0 30 C 30 0 D 30 30 4 Two tugs are towing an oil rig as shown The tensions in the towing cables are 4.0 kN and 5.0 kN. What is the total force acting on the rig due to the cables, in the direction to the east? A 3.1 kN B 5.2 kN C 7.0 kN D 8.3 Kn oil rig 20 ° 50 ° east tug tug 4.0 kN 5.0 kN X Y Z 5.0 m 12.0 m 13.0 m

4 5 A car accelerates uniformly from velocity u to velocity v in time t. On the graph, which area equals the distance travelled by the car in time t ? A NPTU + PQST B NPWV + VRSU C NPWV + WRST D PST + PQS 6 A raindrop falls vertically from rest in air. The