2013_JJC_H2_Physics_P1

JJC 2013 9646/JC2 Prelim Exam P1/2013 [Turn Over JURONG JUNIOR COLLEGE JC2 Preliminary Examination 2013 Name Class 12S PHYSICS Higher 2 Multiple Choice Additional Materials: Multiple Choice Answer Sheet Soft clean eraser Soft pencil (type B or HB is recommended) 9646/1 20 Sept 2013 1 hour 15 min READ THESE INSTRUCTIONS FIRST Do not open this booklet until you are told to do so. Write your name and class in the spaces provided at the top of this page. 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 forty 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 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. (This question paper consists of 20 printed pages)

JJC 2013 9646/JC2 Prelim Exam P1/2013 [Turn Over 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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 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 v = 22() ox 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 = o Q ε r4 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(-λt) decay constant λ = 1/ 2 0.693 t

JJC 2013 9646/JC2 Prelim Exam P1/2013 [Turn Over 1 What is the tesla, the SI unit of magnetic flux density, expressed in SI base units? A N A-1 m-1 B kg A-1 s-1 C kg A-1 s-2 D kg A-1 m-2 s-2 2 A rubber ball hits a horizontal surface at a velocity 5 m s -1 and bounces off at 4 m s -1 as shown below. Which of the following indicates the direction of the force acting on the ball by