2023 JPJC Prelim H2 Phy P1

2023/JPJC/Prelim/9749/01 [Turn over Data READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name, class and index number on the Answer Sheet in the spaces provided. There are thirty questions in 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. This document consists of 20 printed pages. JURONG PIONEER JUNIOR COLLEGE JC2 Preliminary Examination 2023 PHYSICS 9749/01 Higher 2 19 September 2023 Paper 1 Multiple Choice 1 hour Additional Material: Multiple Choice Answer Sheet Name: _______________________________ Class: ______________

2 2023/JPJC/Prelim/9749/01 Data speed of light in free space 810 00. 3 × =c m s−1 permeability of free space 7 0 104 −× =π µ Hm−1 permittivity of free space 12 0 10 85. 8 −× =ε Fm−1 ( )( ) 910 361 −×= π Fm−1 elementary charge 191.60 10e −= × C the Planck constant 346.63 10h −= × Js unified atomic mass constant 271.66 10u −= × kg rest mass of electron 31 e 9.11 10m −= × kg rest mass of proton 27 p 1.67 10m −= × kg molar gas constant 8.31R = JK−1 mol−1 the Avogadro constant 23 A 6.02 10N = × mol−1 the Boltzmann constant 231.38 10k −= × JK−1 gravitational constant 116.67 10G −= × Nm2 kg−2 acceleration of free fall 81. 9=g m s−2

3 2023/JPJC/Prelim/9749/01 [Turn over Formulae uniformly accelerated motion 2 2 1 at uts + = asu v 22 2+ = work done on/by a gas V p W∆ = hydrostatic pressure ghp ρ= gravitational potential GM rφ =− temperature /K / C 273.15TT = +  pressure of an ideal gas 21 3 Nmpc V= mean translational kinetic energy of an ideal gas molecule 3 2E k T= displacement of particle in s.h.m. t x xωsin0= velocity of particle in s.h.m. t v vωcos0= 22 0 x x− ± =ω electric current Anvq=I resistors in series ...2 1+ + =R R R resistors in parallel .../ 1 / 1 / 121 + + =R R R electric potential r QV 04πε= alternating current/voltage t x xωsin0= magnetic flux density due to a long straight wire 0 2B d µ π= I magnetic flux density due to a flat circular coil 0 2 NB r µ= I magnetic flux density due to a long solenoid 0Bn µ= I radioactive decay )exp(0 t x xλ− = decay constant 1 2 ln2 tλ =

4 2023/JPJC/Prelim/9749/01 1 The radia