2021 Prelim Phy P1

Name : Centre/Index Number: Class: DUNMAN HIGH SCHOOL Preliminary Examination Year 6 H2 PHYSICS Paper 1 Multiple Choice Additional Materials: Multiple Choice Answer Sheet 9749/01 27 September 2021 1 hour READ THESE INSTRUCTIONS FIRST Write your centre number, index number, name and class at the top of this page. Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. 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. © DHS 2021 9749/01 [Turn over This document consists of 25 printed pages and 1 blank page. This document consists of 17 printed pages and 1 blank page.

2 Data speed of light in free space, c = 3.00 × 108 m s1 permeability of free space, o = 4 × 107 H m1 permittivity of free space, o = 8.85 × 1012 F m1 (1/(36)) × 109 F m1 elementary charge, e = 1.60 × 1019 C the Planck constant, h = 6.63 × 1034 J s 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 molar gas constant, R = 8.31 J K1 mol1 the Avogadro constant, NA = 6.02 × 1023 mol1 the Boltzmann constant, k = 1.38 × 1023 J K1 gravitational constant, G = 6.67 × 1011 N m2 kg2 acceleration of free fall, g = 9.81 m s2 © DHS 2021 9749/01

3 Formulae uniformly accelerated motion s = v2 = work done on/by a gas W = pV hydrostatic pressure p = gh gravitational potential  = temperature T/K = T/oC + 273.15 pressure of an ideal gas p = mean translational kinetic energy of an ideal gas molecule E = displacement of particle in s.h.m. x = x0 sin t velocity of particle in s.h.m. v = v0 cos t = electric current I = Anvq resistors in series R = R1 + R2 + . . . resistors in parallel 1/R = 1/R1 + 1/R2 + . . . electric potential V = alternating current / voltage x = x0 sin t magnetic flux density due to a long straight wire B = magnetic flux density due to a flat circular coil B = magnetic flux density due to a long solenoid B = radioactive decay x = x0 exp(t) © DHS 2021 9749/01 [Turn over

4 decay constant  = © DHS 2021 9749/01

5 1 Which estimate is realistic? A The kinetic energy of a bus travelling on an expressway is 30 000 J. B The power of a domestic light is 300 W. C The temperature of a hot oven is 300 K. D The volume of air in a car tyre is 0.03 m3. 2 A radio aerial of length L, when the current is I, emits a signal of wavelength  and power P. These qualities are related by where k is a constant. What unit, if any, should be used for the constant k? A volt B ohm