Prelim SAJC (H1) P2 2024 QP

1 SAJC 2024 Prelim / 8867 [Turn Over Class Index Number Name ST. ANDREW’S JUNIOR COLLEGE JC 2 2024 Preliminary Examination PHYSICS, Higher 1 8867/02 Paper 2 Structured Questions 28 August 2024 2 hours Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your name, index number and Civics Group 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 a HB pencil for any diagrams or graphs. Do not use staplers, 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 / 8 2 / 4 3 / 6 4 / 12 5 / 16 6 / 14 Section B 7 / 20 8 / 20 Total / 80

2 SAJC 2024 Prelim / 8867 [Turn Over This question paper consists of 22 printed pages including this page.

3 SAJC 2024 Prelim / 8867 [Turn Over

4 SAJC 2024 Prelim / 8867 [Turn Over Section A Answer all the questions in the spaces provided. 1 (a) A circuit is set up to measure the resistance R of a metal wire. The potential difference (p.d.) V across the wire and the current I in the wire are to be measured. Readings for p.d. V and the corresponding current I are obtained. These are shown in Fig. 1.1. Fig. 1.1 (i) Explain how Fig. 1.1 indicates that the readings are subjected to 1. a systematic uncertainty, ……………………………………………………………………………………………………….. …………………………………………………………………………………………………….[1] 2. random uncertainties. ……………………………………………………………………………………………………….. …………………………………………………………………………………………………….[1] (ii) Use data from Fig. 1.1 to determine R. Explain your working. R = …………………………….. Ω [3]

5 SAJC 2024 Prelim / 8867 [Turn Over (b) In another experiment, a value of resistance R of a wire is determined from the following data: Current I = 0.64  0.01 A and p.d. V = 6.8  0.1 V. Calculate the value of R, together with its uncertainty. Give your answer to an appropriate number of significant figures. R = …………………  ………..……….. Ω [3] 2 Fig 2.1 shows how the gravitational force F acting on a 1 kg mass varies with distance from the centre of the Earth. The radius of the Earth is 6300 km. Fig. 2.1 (a) State Newton’s law of gravitation. ………………………………………………………………………………………………………………... ………………………………………………………………………………………………………………... …………………