2018 MJC P2 Qn

This document consists of 24 printed pages. [Turn over MERIDIAN JUNIOR COLLEGE JC2 Preliminary Examinations Higher 2 H2 Physics 9749/02 Paper 2 Structured Questions 12 September 2018 2 hours Candidates answer on the Question Paper. No Additional Materials are required. Class Reg No Candidate Name: READ THESE INSTRUCTIONS FIRST Write your name, class and index number 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 a 2B pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. 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. For Examiner’s Use 1 / 6 2 / 8 3 / 11 4 / 10 5 / 10 6 / 8 7 / 7 8 / 20 Deductions Total / 80

Meridian Junior College H2 Physics Paper 2 JC2 Preliminary Examinations 2018 2 12 September 2018 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 ε0 = 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

Meridian Junior College H2 Physics Paper 2 JC2 Preliminary Examinations 2018 3 12 September 2018 [Turn over Formulae uniformly accelerated motion s = 21 2ut at+ v2 = u2 + 2as work done on/by a gas W = pV hydrostatic pressure p = gh gravitational potential  = −Gm/r temperature T /K = T /°C + 273.15 pressure of an ideal gas p = 21 3 Nm cV  mean translation kinetic energy an ideal gas molecule E = 3 2 kT displacement of particle in s.h.m. x = xo sin t velocity of particle in s.h.m. v = v0 cos t =   22 oxx − electric current I = Anvq resistors in series R = R1 + R2 + … resistors in parallel 1/R = 1/R1 + 1/R2 + … electric potential V = 04 Q r alternating current/voltage x = x0 sin t magnetic flux density due to a long straight wire B = 0 2 d   I magnetic flux density due to a flat circular coil B = 0 2 N r  I magnetic flux density due to a long solenoid B = 0n I radioactive decay x = ( )0 expxt − decay constant  = 1 2 ln2 t

Meridian Junior College H2 Physics Paper 2 JC2 Preliminary Examinations 2018 4 12 September 2018 Answer all the questions in the spaces provided. 1 (a) For an oscillating body, state what is meant by (i) natural frequency of vibration, ...