NJC_2024_H1_Physics_Prelim_P1_QP

[Turn over NATIONAL JUNIOR COLLEGE SENIOR HIGH 2 PRELIMINARY EXAMINATION Higher 1 CANDIDATE NAME SUBJECT CLASS REGISTRATION NUMBER PHYSICS Paper 1 Multiple Choice Additional Materials: Multiple Choice Answer Sheet 8867/01 18 September 2024 1 hour READ THE INSTRUCTION FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your name, subject class and registration number on the Answer Sheet in the spaces provided un less this has been done for you. There are thirty questions on this paper. Answer all questions. For each question there are four possible answers A, B, C and 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. The OAS index number is in a 5-digit format. The 5-digit format is as follows: 2nd digit and the last four digits of the Reg Number. e.g. 2005011 becomes 05011 This document contains 13 printed pages and 3 blank pages. H

2 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 = ut + at2 v2 = u2 + 2as resistors in series R = R1 + R2 + ….. resistors in parallel 1/R = 1/R1 + 1/R2 + …..

3 [Turn over 1 Which of the following gives the correct order of magnitude? pico nano micro A 10–12 10–9 10–6 B 10–12 10–9 10–3 C 10–10 10–9 10–3 D 10–10 10–6 10–3 2 Four physical quantities P, Q, R and S are related by the equation ܲ= ܳ − ܴ ܵ . Which statement must be correct for the equation to be homogeneous? A P, Q, R and S are all scalar quantities. B The product PS is numerically equal to (Q – R). C P, Q, R and S all have the same units. D The product PS has the same units as Q and R. 3 When comparing systematic and random errors, the following pairs of characteristics of errors in an experimental measurement may be contrasted: X1: error can possibly be eliminated X2: error cannot possibly be eliminated Y1: error is of constant sign and magnitude Y2: error is of varying sign and magnitude Z1: error will be reduced by averaging repeated measurements Z2: error will not be reduced by averaging repeated measurements Which properties apply to systematic errors? A X1, Y1, Z2 B X1, Y2, Z2 C X2, Y2, Z1 D X2, Y1, Z1

4 4 Four balances were used to measure th