EJC Physics 2022 J2 H1 MYE P2 Qn

©EJC 2022 8867/02/J2H1MYE/2022 [Turn over EUNOIA JUNIOR COLLEGE JC2 MID YEAR EXAMINATION 2022 General Certificate of Education Advanced Level Higher 1 CANDIDATE NAME CIVICS GROUP 2 1 - REGISTRATION NUMBER PHYSICS Paper 2 Structured Questions 8867/02 June 2022 2 hours Candidates answer on the Question Paper READ THESE INSTRUCTIONS FIRST Write your name, civics group and registration number on all the work you hand in. Do not use paper clips, highlighters, glue or correction fluid. Answer all questions. The use of an approved scientific calculator is expected where appropriate. Structured Questions Write in dark blue or black pen on both sides of the paper. You may use an HB pencil for any diagrams or graphs. At the end of the examination, fasten all your work securely together. The number of marks is given in brackets [ ] at the end of each question or part question. This document consists of 17 printed pages and 1 blank page. For Examiner’s Use 1 5 2 10 3 10 4 15 5 20 6 10 7 10 s.f. c.f. Total 80

2 ©EJC 2022 8867/02/J2H1MYE/2022 Data Formulae uniformly accelerated motion = + ++ = + = + + =   2 22 12 12 1 2 2 11 1 s at u as R /R /R u v /R t RR resistors in series resistors in parallel speed of light in free space − − − − − − −− − × × = × × × = × = = = × = = = 81 19 27 31 e 27 p 23 1 A 11 2 2 2 3 00 1 60 9 11 1 10 m s 10 C 1 66 10 kg 10 kg 10 kg 6 02 10 mol 10 N m k 6 1 g m 7 s 7 66 98 c u . e. . . N G. g . m m . . elementary charge unified atomic mass constant rest mass of electron rest mass of proton the Avogadro constant gravitational constant acceleration of free fall

3 ©EJC 2022 8867/01/J2H1MYE/2022 [Turn over Answer all the questions in the spaces provided. 1 The variable resistor is adjusted to give a new set of readings which, when repeated, give values of voltage V and current I of (3.00 ± 0.03) V and (4.9 ± 0.1) mA respectively. (a) Estimate the percentage uncertainty in the value of the unknown resistance X as a result of the uncertainties in the values of V and I. percentage uncertainty = ………………….. % [2] (b) Determine the unknown resistance X and express it with its associated uncertainty to the appropriate number of significant figures. resistance = …………………..±…………….. Ω [3]

4 ©EJC 2022 8867/02/J2H1MYE/2022 2 (a) Define acceleration. ...……………………………….…………………………………………………………………... ………...…………………………………….……………………………………………………[1] (b) A stone is projected from a cliff on a faraway planet. It travels from point A, through point B and to point D as shown in Fig. 2.1. The horizontal dotted line AB is at a vertical distance of 1.1 m above the horizontal dotted line CD.