MI 23M1PrelimQP (H2 PHYSICS P1)

Class Adm No Candidate Name: This document consists of 18 printed pages. [Turn over 2023 Preliminary Examinations Pre-University 3 H2 PHYSICS 9749/1 Paper 1 Multiple Choice 21 September 1 hour Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Do not turn over this page until you are told to do so. Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name, class and admission number on the Answer Sheet in the spaces provided. 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 OMR 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 working should be done in this booklet. The use of an approved scientific calculator is expected, where appropriate. H

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–1mol–1 the Avogadro constant NA = 6.02  1023mol–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

3 [Turn over Formulae uniformly accelerated motion s = ut + at2 v2 = u2 + 2as work done on/by a gas W = p V hydrostatic pressure p =  g h gravitational potential φ = temperature T/K = T / °C + 273.15 pressure of an ideal gas p = 1 3 𝑁𝑚 𝑉 < 𝑐2 > mean kinetic energy of a molecule of an ideal gas E = displacement of particle in s.h.m. x = xo sin t velocity of particle in s.h.m. v = vo cost v =  electric current I = Anvq resistors in series R = R1 + R2 + … resistors in parallel = electric potential V = alternating current/voltage x = xo sin t magnetic flux density due to a long straight wire B = 𝜇𝑜𝐼 2𝜋𝑑 magnetic flux density due to a flat circular coil B = 𝜇𝑜𝑁𝐼 2𝑟 magnetic flux density due to a long solenoid B = onI radioactive decay x = x0exp(–t) decay constant,  = 𝑙𝑛2 𝑡1/2

4 1 P and R are coplanar vectors. If X = P – R, which diagram best represents vector X? A B C D R P R P X R P X R P X R P X

5 [Turn over 2 The following are graphs of various quantities plotted against time for an object dropped from a stationary balloon high in the atmosphere.