Prelim H2P2

1 Name: _____________________________ ( ) Class: 21 / ______ 2021 JC2 Preliminary Examination PHYSICS Higher 2 9749/02 Paper 2 Structured Questions Wednesday 1 September 2021 2 hours Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your name, class index number and class in the spaces at the top of this page. Write in dark blue or black pen on both sides of the paper. You may use an HB pencil for any diagrams or graphs. The use of an approved scientific calculator is expected, where appropriate. Answer all questions. 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. 9749/02/ASRJC/2021PRELIM [Turn over ANDERSON SERANGOON JUNIOR COLLEGE For Examiner’s Use Paper 2 (80 marks) 1 2 3 4 5 6 7 Deduction Total This document consists of 21 printed pages and 3 blank pages.

2 Data speed of light in free space c = 3.00  108 m s−1 permeability of free space 0 = 4  10−7 H m−1 permittivity of free space 0 = 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 9749/02/ASRC/2021PRELIM

3 Formulae uniformly accelerated motion s = ut + 1 2 at 2 v2 = u2 + 2 as work done on/by a gas W= pΔV hydrostatic pressure p= ρ gh gravitational potential φ= −Gm r temperature T/K  T/C + 273.15 pressure of an ideal gas p  1 3 Nm V ⟨ c2⟩ mean translational kinetic energy of an ideal gas molecule E= 3 2 kT displacement of particle in s.h.m. x  x0 sin  t velocity of particle in s.h.m. v  v0 cos  t = ±ω√ xo2−x2 electric current I  Anvq resistors in series R = R1 + R2 + … resistors in parallel 1/R = 1/R1 + 1/R2 + … electric potential V = Q 4 πεo r alternating current/voltage x = x0 sin  t magnetic flux density due to a long straight wire B  μo I 2 πd magnetic flux density due to a flat circular coil B  μo∋ ¿ 2 r ¿ magnetic flux density due to a long solenoid B  μo∋¿ ¿ radioactive decay x = x0 exp(–t) decay constant   ln 2 t 1 2 9749/02/ASRJC/2021PRELIM [Turn over

2 9749/02/ASRC/2021PRELIM

5 Answer all the questions in the spaces provided. 1 (a) State one similarity and one difference between the electric field lines and the gravitational field lines around an isolated positively charged metal sphere. similarity: ........................