2023 RI Prelims P2 QP

© Raffles Institution Centre Number Index Number Name Class S3016 RAFFLES INSTITUTION 2023 Preliminary Examination PHYSICS Higher 1 Paper 2 Structured Questions 8867/02 September 2023 2 hours Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your index number, name and class in the spaces at the top of this page. Write in dark blue or black pen on both sides of the paper. You may use an HB pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. The use of an approved scientific calculator is expected, where appropriate. Section A Answer all questions. Section B Answer any one question. The number of marks is given in brackets [ ] at the end of each question or part question. For Examiner’s Use Section A 1 / 5 2 / 9 3 / 10 4 / 7 5 / 9 6 / 20 Section B (circle question attempted) 7 / 8 / 20 Deduction Total / 80 This document consists of 26 printed pages.

2 © Raffles Institution Data speed of light in free space c  3.00 × 108 m s1  elementary charge e  1.60 × 1019 C  unified atomic mass constant u  1.66 × 1027 kg  rest mass of electron me  9.11 × 1031 kg  rest mass of proton mp  1.67 × 1027 kg  the Avogadro constant NA  6.02 × 1023 mol1  gravitational constant G  6.67 × 1011 N m2 kg2  acceleration of free fall g  9.81 m s2 Formulae uniformly accelerated motion s  21 2ut at 2v  2 2u as  resistors in series R  R1 + R2 + ….  resistors in parallel 1/R  1/R1 + 1/R2 + ….

3 © Raffles Institution [Turn over Section A Answer ALL questions from this section 1 The acceleration of free fall g can be determined through the period of oscillation T of a simple pendulum of length L. The relationship between these quantities is 2 LT g . In one particular experiment, the following measurements were made. L = (0.850  0.001) m time for 20 oscillations = (36.9  0.2) s (a) Use these measurements to determine a value, to three significant figures, of g. g = m s2 [1] (b) Determine the actual uncertainty in the value of g. Hence, give a statement of g, with its uncertainty, to an appropriate number of significant figures. g =  m s2 [4]

4 © Raffles Institution 2 Tarzan wants to get a coconut from a coconut tree by throwing a stone at the coconut to knock it down. The coconut is 18.0 m above the ground as shown in Fig. 2.1. Tarzan throws a stone such that it hits the coconut horizontally. The stone is projected with an initial speed of 20 m s1 at 2.2 m above the ground. Air resistance is negligibl