2013_MJC_H2_Physics_P1

This question paper consists of 15 printed pages MERIDIAN JUNIOR COLLEGE Preliminary Examination Higher 2 _______________________________________________________________________ H2 Physics 9646/1 Paper 1 25 September 2013 1 hour 15 min _______________________________________________________________________ Class Reg Number Candidate Name _____________________________ READ THESE INSTRUCTIONS FIRST Do not open this booklet until you are told to do so. There are forty questions in this section. 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 Optical Mark Sheet (OMS). Read very carefully the instructions on the OMS. Write your name and class in the spaces provided on the OMS. Shade your Index Number column using the following format: 1) first 2 digits is your index number in class (e.g. 5th student is shaded as “05”); 2) ignore the last row of alphabets.

Preliminary Examination Meridian Junior College 25 September 2013 JC2 H2 Physics 2013 2 Data speed of light in free space c = 3.00 x 108 m s-1 permeability of free space o = 4 x 10-7 H m-1 permittivity of free space ε0 = 8.85 x 10-12 F m-1 = (1/(36)) x 10-9 F m-1 elementary charge e = 1.60 x 10-19 C the Planck constant h = 6.63 x 10-34 J s unified atomic mass constant u = 1.66 x 10-27 kg rest mass of electron me = 9.11 x 10-31 kg rest mass of proton mp = 1.67 x 10-27 kg molar gas constant R = 8.31 J K-1 mol-1 the Avogadro constant NA = 6.02 x 1023 mol-1 the Boltzmann constant k = 1.38 x 10-23 J K-1 gravitational constant G = 6.67 x 10-11 N m2 kg-2 acceleration of free fall g = 9.81 m s-2 Formulae uniformly accelerated motion s = ut + 1 2 at2 v2 = u2 + 2as work done on/by a gas W = pV hydrostatic pressure p = gh gravitational potential  =  Gm r displacement of particle in s.h.m. x = xo sin t velocity of particle in s.h.m. v = vo cos t =   22 o -x x mean kinetic energy of a molecule of an ideal gas E = 3 2 kT 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 = xo sin t transmission coefficient T  exp(-2kd) where k =   2 2 8( )mU E h radioactive decay x = xo exp(-t ) decay constant  = 1 2 0.693 t

Preliminary Examination Meridian Junior College 25 September 2013 JC2 H2 Physics 2013 3 Answer all 40 questions in this paper and shade your answers on the answer sheet provided. 1 When comparing systematic and random errors, the following pairs of properties of errors in an experimental measurement may be contrasted. P 1 : error can possibly be eliminated P2 : error cannot possibly be eliminated Q1 : error is of constant sign and magnitude Q2 : error is of varying sign and m