CJC_H1_PHY_P1_QP_and_SOL

1 [Turn Over] NAME: ______SOLUTIONS__________ CLASS: ___________ INDEX: __________ CATHOLIC JUNIOR COLLEGE JC2 Preliminary EXAMINATIONS Higher 1 PHYSICS 8866/01 Paper 1 1 September 2015 60 min Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write your name, tutorial group and index number on this cover page. Write and/or shade your name, NRIC / FIN number and HT group on the Answer Sheet (OMR sheet), unless this has been done for you. Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. There are a total of 30 Multiple Choice Questions (MCQs) 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 Answer Sheet (OMR sheet) provided. 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. Calculators may be used. This document consists of 12 printed pages. [Turn over]

2 [Turn Over] PHYSICS 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 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 acceleration of free fall, g = 9.81 m s-2 PHYSICS FORMULAE: uniformly accelerated motion, s = u t + 2 1 a t2 v2 = u2 + 2 a s work done on / by a gas, W = p V Hydrostatic pressure p =  g h resistors in series, R = R1 + R2 + ... resistors in parallel, R 1 = ... 21 11 RR

3 [Turn Over] 1 Estimate the time taken for a laser beam to travel from a laser gun at the grandstand to the goalkeeper. A 3 ns B 300 ns C 3 ps D 300 ps Answer: B Estimate distance = 100 m Speed = 3 x 108 m s-1 time = distance / speed = 100 / 3 x 108 = 3 x 10-7 = 300 x 10-9 = 300 ns 2 A petrol gauge in a car indicates the volume V of fuel in the tank. V is given by the angular deflection θ of the pointer on a dial such hat the scale is linear. The graph below shows the actual variation of the volume V of fuel with the angular deflection θ. Which of the following statements are not correct? P: The petrol gauge is most sensitive when the tank has low fuel level. Q: The petrol gauge is most sensitive when the tank has high fuel level. R: The readings of V from the scale results in a random error. S: The readings of V from the scale results in a systematic error V θ Actual relation between V