MJC H1 PHY P1

This booklet consists of 14 printed pages MERIDIAN JUNIOR COLLEGE JC2 Preliminary Examinations Higher 1 H1 Physics 8866/01 Paper 1 Multiple Choice 22 September 2016 1 hour Additional Materials: Multiple Choice Answer Sheet Class Reg No Candidate Name: READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your name, class and index number on the Answer Sheet in the spaces provided. In the Index Number section, shade your index number using the first two spaces (e.g. index number 5 should be entered as “05”). Ignore the remaining numbers and letters. There are thirty 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 Answer Sheet. 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. The use of an approved scientific calculator is expected, where appropriate.

JC2 Preliminary Examinations Meridi an Junior College 22 September 2016 H1 Physics Paper 1 2 DATA AND FORMULAE Data speed of light in free space c = 3.00 × 10 8 m s−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 acceleration of free fall g = 9.81 m s−2 Formulae uniformly accelerated motion s = ut + at 2 v2 = u2 + 2as work done on/by a gas W = pV hydrostatic pressure p = gh resistors in series R = R1 + R2 + … resistors in parallel 1/R = 1/ R1 + 1/R2 + … 1 2

JC2 Preliminary Examinations Meridi an Junior College 22 September 2016 H1 Physics Paper 1 3 1 The SI unit for magnetic flux density is the tesla (T). How should the tesla be expressed in terms of SI base units? A kg s −1 A−2 B kg s −2 A−1 C kg s−1 C−1 D kg s −2 C2 2 Which pair includes a vector and scalar quantity? A displacement acceleration B magnetic flux density kinetic energy C power electromotive force D electric current potential energy 3 A wire is connected in a simple circuit as shown below. The voltmeter reads (2.0 ± 0.5) V while the ammeter reads (0.30 ± 0.01) A. What is the uncertainty in the resistance of the wire? A 0.2 Ω B 0.3 Ω C 1 Ω D 2 Ω 4 A stone falls freely from rest to the ground. The effect of air resistance on the stone is negligible. The stone travels 3 4 of the total distance to the ground in the last two seconds of its fall. What is the total time of its fall? A 1.3 s B 2.7 s C 4.0 s D 14.9 s 5 A man throws a stone upwards off the edge of a cliff with an initial velocity u. The stone reaches the highest point at 2.0 s and then reaches the bottom of the cliff at 7.0 s. Air resistance is negligible. Which of the following shows the correct signs for displacement s, velocity v and acceleration a of the stone at the respective times t? t / s s v a A 1.0 + + + B 3.0 + + − C 3.5 − − − D 6.5 − − − wire A V

JC2 Preliminary Examinations Meridi an Junior College 22 September 2016 H1 Physics Paper 1 4 6 The graph below shows how the speed of a vehicle varies over a period of time of 100 s. What is the average speed of the vehicle over the 100 s? A 8.0 m s −1 B 12 m s −1 C 15 m s −1 D 20 m s −1 7 A uniform sphere of weight 15 N is placed in between two smooth planes as shown. What is the magnitude of the force exerted by the vertical plane on the sphere? A zero B 7.5 N C 8.7 N D 13.0 N 8 A mass is suspended using a spring balance from the ceiling of a lift. When the lift is moving up at a constant speed, the reading on the spring balance is F. Under which of the following situations is the reading on the spring balance more than F? A The lift is stationary B The lift is moving down at constant speed C The lift is moving down at increasing speed D The lift is moving down at decreasing speed speed / m s-1 10 20 30 0 time / s 20 40 60 80 100 60 vertical plane slanted plane sphere

JC2 Preliminary Examinations Meridi an Junior College 22 September 2016 H1 Physics Paper 1 5 9 Two carts of different masses m1 and m2 move towards each other at different speeds u1 and u2 respectively and collide, producing a loud sound. Subsequently, the two carts move in opposite directions. Which of the following must be correct? A The collision was elastic since the carts move in opposite directions. B Each cart experienced a change in momentum, and thus the total momentum of the system must have changed. C The sum of kinetic energies of the carts after the collision is less than that before the collision. D The relative speed of approach and the relative speed of separation of the carts must be the same. 10 A particle X moving with kinetic energy E and momentum p makes a head-on inelastic collision with an identical particle Y which is initially at rest. Which of the following options shows possible values for the kinetic energy of the particle X and the system as a whole, and the magnitude of the momentum of X and the system as a whole, after this collision? kinetic energy of momentum of X system X system A 0 E 0 p B E 2 E p 2 p C E 4 E 2 p 4 p 2 D E 4 E 2 p 2 p 11 Two ice boats, of masses m and 2 m, are made to compete in a race on a frictionless frozen lake. The boats have identical sails so that the wind pushes them forward with the same force. The two boats start from rest and travel the same distance. Which of the following statements is correct? A The boat of mass m will win the race but the two boats will have the same final speed. B The boat of mass m will win the race but it will have a lower final kinetic energy. C The boat of mass m will win the race and it will have a higher final kinetic energy. D The boat of mass m will win the race but the two boats will have the same final kinetic energy.

JC2 Preliminary Examinations Meridi an Junior College 22 September 2016 H1 Physics Paper 1 6 12 A 5.0 kg mass is placed on a frictionless surface, at the end of a spring. The mass is initially at x = 0 m and the spring at its natural length. The graph shows how the elastic force in the spring F varies with its extension x. At x = 0 m, the mass is given an initial speed of 4.0 m s −1. The mass comes to a stop at x = 2.0 m. What is the speed of the mass when the mass is at x = 1.0 m? A 2.0 m s −1 B 2.8 m s −1 C 3.0 m s −1 D 3.5 m s −1 13 The following shows a displacement-time graph of a mass being moved on a table. It experiences a constant force of friction. Which time interval has the greatest work done per unit time against friction? 2.00 F / N extension x / m x = 0 m displacement time A B C D

JC2 Preliminary Examinations Meridi an Junior College 22 September 2016 H1 Physics Paper 1 7 14 A small mass m is launched by a spring and travels along a rough track to a point P. The spring constant is k and the initial compression of the spring was x. As it travels to P it goes through a dip of depth H. The mass experiences a constant force of friction f for the entire distance of d. What is the kinetic energy of the mass at point P? A 21 2 kx fd B 21 2 kx fd mgH C 21 2 kx fd D 21 2 kx fd mgH 15 Which one of the following cannot be polarised? A Sound waves B Radio waves C Microwaves D X-rays 16 A longitudinal wave travels to the right along a long horizontal spring. The graph below shows the displacement of different points of the spring at a given instant of time. Which of the following statements is true? A P is moving vertically downwards. B Q is stationary. C P and Q are moving in opposite directions. D