SCGS 2025 PHY PRELIM P1 QP

SINGAPORE CHINESE GIRLS’ SCHOOL PRELIMINARY EXAMINATION 2025 SECONDARY FOUR CANDIDATE NAME CLASS 4 REGISTER NUMBER CENTRE NUMBER INDEX NUMBER PHYSICS 6091/1 Paper 1 Multiple Choice 28 August 2025 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 19 printed pages and 1 blank page.

2 1 For which measurement would a micrometer screw gauge be most suitable for accurate measurement? A diameter of an atom B diameter of a wire C length of this page D length of a pencil 2 A metal ball is attached to a cork with a string and lowered into a measuring cylinder of water until the ball is fully submerged while the cork remains above the water, as shown in Fig. 2.1. The string is then lowered further so that both the ball and the cork are fully submerged, as shown in Fig. 2.2. → Fig. 2.1 Fig. 2.2 The mass of the cork is 4.8 g. What is the likely density of the cork? A 0.15 g/cm3 B 0.20 g/cm3 C 0.60 g/cm3 D 5.0 g/cm3 3 Two forces P and Q act on an object. Which diagram shows the resultant of these two forces? A B C D

3 4 The figure below shows the velocity-time graphs of two vehicles X and Y. The accelerations and distances travelled by the two vehicles over the 5 s period can be estimated from the graphs. Which statement is correct? A The accelerations of X and Y are the same at 2.5 s. B The acceleration of Y is greater than that of X. C The distance travelled by X is greater than that travelled by Y in the 5 s period. D The distances travelled by X and Y in the 5 s period are the same. 5 A ball is released from rest above a horizontal surface. The graph below shows the variation of its velocity with time. Why are areas X and Y equal? A For one impact, the speed at which the ball hits the surface equals the speed at which it leaves the surface. B The ball rises and falls through the same distance between impacts. C The b