DHS H1 PHY P1

© DHS 2016 8866/Prelim/01/16 [Turn over DUNMAN HIGH SCHOOL Preliminary Examinations Year 6 Higher 1 PHYSICS Paper 1 Multiple Choice 8866/01 September 2016 1 hour Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST 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 unless this has been done for you. DO NOT WRITE IN ANY BARCODES. There are thirty 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 ducted for a wrong answer. Any rough working should be done in this booklet. The use of an approved scientific calculator is expected, where appropriate. This document consists of 15 printed pages and 1 blank page. CANDIDATE NAME CLASS INDEX NUMBER

2 © DHS 2016 8866/Prelim/01/16 Data speed of light in free space, c = 3.00 × 108 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

3 © DHS 2016 8866/Prelim/01/16 [Turn over Formulae uniformly accelerated motion, s = ut + 1 2 at 2 v 2 = u 2 + 2as work done on/by a gas, 0B0B0B0B0B0B0B0B0B0B0B0B0BW = p V hydrostatic pressure, 1B1B1B1B1B1B1B1B1B1B1B1B1Bp = 𝜌gh resistors in series, R = R 1 + R 2 + … resistors in parallel, 1/R = 1/R 1 + 1/R 2 + ...

4 © DHS 2016 8866/Prelim/01/16 1 In thermal physics, the rate of flow of thermal energy, dt d can be found using the equation   L TTkAdt d 12  . k is defined as the thermal conductivity of material, A is the total cross sectional area of conducting surface of material and T2 and T1 are the temperatures across the conducting surface of thickness L. Deduce the SI base unit for thermal conductivity. A kg m s3 K1 B kg m2 K1 C W m1 K1 D J m2 K1 2 The diagram shows two vectors X and Y. In which vector triangle does the vector Z show the magnitude and direction of vector X – Y? 3 The period of oscillation of a simple pendulum is given by g lT 2 . Given that the length of the pendulum, l is (20.0  0.1) cm, Mark measured the period, T to be (0.89  0.02) s. What is the best way Mark should express the calculated value of acceleration due to gravity, g in m s2? A 9.97  0.50 B 9.9  0.5 C 10.0  0.5 D 10  1

5 © DHS 2016 8866/Prelim/01/16 [Turn over 4 A ball is projected at an angle of 30  above the horizontal and travels a horizontal distance of 21.4 m. Determine the new horizontal distance travelled by the ball if it is now projected at the same initial speed but at an angle of 45 above the horizontal. Assume that air resistance is negligible. A 24.7 m B 26.2 m C 30.3 m D 37.1 m 5 An object is projected vertically upwards in an evacuated column. It takes time t to reach the highest point of its motion, and it takes a further time t to fall back to its initial position. The column is then filled with a dense gas so that air resistance acting on the object cannot be ignored. The object is again projected vertically upwards with the same initial speed. It now takes time t1 to reach the highest point of its motion, and a fur ther time t2 to fall back to its initial position. Which of the following options is correct? A t1 = t2 and t1 < t B t1 < t2 and t1 = t C t1 < t2 and t1 < t D t1 = t2 and t1 = t 6 Two blocks X and Y, of masses m and 3 m respectively, are accelerated along a smooth horizontal surface by a force F applied to block X as shown. What is the magnitude of the force exerted by block X on block Y during this acceleration? A F/4 B F/3 C F/2 D 3F/4 30 21.4 m

6 © DHS 2016 8866/Prelim/01/16 7 A lift is moving upwards and slowing down. A man of weight W is in the lift and he experiences a normal force N from the lift. Which of the following relationships is correct? A N = 2W B 2W > N > W C N = W D N < W 8 A ball A of mass M is moving towards the right with speed V2 1 . A ball B of mass 2 M is moving towards the left with speed V3 1 . Both balls are involved in a head-on elastic collision. Calculate the final velocities of the two balls. Velocity of ball A Velocity of ball B A V6 5 towards the left V3 1 towards the right B V18 5 towards the right V9 4 towards the left C V18 5 towards the left V9 1 towards the right D V18 11 towards the left V9 2 towards the right 9 The diagram shows two liquids, labelled P and Q, which do not mix. The liquids are in equilibrium in an open U-tube. What is the ratio density of P density of Q ? A 1/2 B 2/3 C 3/2 D 2

7 © DHS 2016 8866/Prelim/01/16 [Turn over 10 One end of a uniform pole is attached to a hinge on a wall. The other end of the pole is attached to a rope. Given that the pole has a mass of 12.5 kg, determine the magnitude of the force that the hinge exerts on the pole. A 70.8 N B 123 N C 142 N D 173 N 11 An L-shaped rigid lever arm is pivoted at point P. Three forces act on the level arm, as shown in the diagram. What is the magnitude of the resultant moment of these forces about point P? A 30 N m B 35 N m C 50 N m D 90 N m wall 30 rope

8 © DHS 2016 8866/Prelim/01/16 12 A stone of weight 4.0 N in the Earth’s gravitational field is moved from P to Q and then to R along the path shown. How much potential energy does the stone gain? A 120 J B 200 J C 240 J D 1200 J 13 A 200 g block is pressed against a spring of force constant 1.4 kN m -1 until the block compresses the spring by 10 cm. The spring rests at the bottom of a ramp inclined at 60° to the horizontal. If there is a friction of 1.2 N between the block and the ramp, how far up the incline will the block move before it comes to stop for the first time when the block is released? A 2.4 m B 3.2 m C 4.1 m D 7.1 m 14 The engine of a boat supplies a constant power of 110 kW to propel the boat forward. The boat attains a maximum speed of 21.0 m s1. Given that the magnitude of the resistive force acting on the boat is proportional to the square of the boat’s speed, calculate the resultant force acting on the boat when it is moving with a speed of 15.0 m s1. A 2.67 kN B 3.59 kN C 4.66 kN D 7.33 kN 60° fixed support

9 © DHS 2016 8866/Prelim/01/16 [Turn over 15 A wave has frequency of 5.0 Hz. It travels through a medium at a speed of 8.0 km s1. What is the phase difference, in radians, between two points 2.0 km apart? A 0 B 4 C 2 D  16 Light reflected from the surface of water is polarised. A po laroid filter is used to view a water surface. The polaroid filter is rotated through 180° in the plane perpendicular to the reflected light. Which statement could describe the observations? A The brightness changes from a maximum to a minimum. B The brightness changes from a minimum to a maximum. C The brightness changes from a maximum to a minimum to a maximum. D The brightness changes from a minimum to a maximum to a minimum to a maximum. 17 The intensity I of a sound at a point P is inv ersely proportional to the square of the distance x of P from the source of the sound. That is Air molecules at P, a distance r f