2024 Cedar S4 Physics Prelim P1

CEDAR GIRLS’ SECONDARY SCHOOL Preliminary Examination 2024 Secondary Four PHYSICS 6091/01 Paper 1 27 August 2024 1 hour Additional Materials: OMR Form Candidates are to answer on the OMR Form. READ THESE INSTRUCTIONS FIRST Write your name, class, and index number in the spaces at the top of this page. Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. 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 OMR form. 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 paper. The use of an approved scientific calculator is expected, where appropriate. At the end of the examination, hand in OMR form separately. The total number of marks for this paper is 40. This document consists of 16 printed pages.

2 1 What is the order of magnitude of the diameter of the Earth? A 1 x 103 m B 1 x 107 m C 1 x 109 m D 1 x 1012 m 2 What is the unit of force expressed in SI base units? A (kg m) / s2 B kg / (m s) C kg / (m s2) D (kg m) / s-2 3 Which list contains only scalar quantities? A acceleration, displacement, velocity B distance, force, speed C moment of force, length, time D work done, mass, speed 4 A cyclist takes a ride lasting 250 s. The distance-time graph shows the distance travelled by the cyclist What is his average speed for the whole journey? A 1.0 m/s B 1.2 m/s C 180 m/s D 200 m/s distance/m time/s 300 200 100 50 100 150 200 250 0 0

3 5 A ball starts from rest and rolls down a steep slope. The ball then rolls along rough horizontal ground. Which graph describe the motion of the ball? A B C D 6 Which diagram shows the addition of the 4.0 N and the 3.0 N forces? A B C D speed speed speed speed time time time time 5.0 N 5.0 N 5.0 N 5.0 N 3.0 N 3.0 N 3.0 N 3.0 N 4.0 N 4.0 N 4.0 N 4.0 N

4 7 A car is accelerating along a road in the direction shown. The wheel shown is connected to the engine. In which direction is the force of friction exerted by the road on the car tyre? 8 The diagram shows a parachutist falling towards Earth. The lengths of the arrows represent the sizes of the forces on the parachutist and the parachute. How is the parachutist moving at the instant shown? A accelerating downwards B constant speed C decelerating downwards D decelerating upwards direction of travel car tyre wheel road air resistance weight A B C D

5 9 A uniform solid block has weight 500 N, width 0.40 m and height 0.60 m. The block rests on the edge of a step of depth 0.80 m, as shown. The block is knocked over the edge of the step and rotates through 90° before coming to rest with the 0.60 m edge horizontal. What is the change in gravitational potential store of the block? A 300 J B 400 J C 450 J D 550 J 10 A train of mass 40 000 kg is moving along a straight track. The velocity of the train decrease from 30 m/s to 25 m/s. How much work done to slow the train down? A 1.0 x 105 J B 5.0 x 105 J C 5.5 x 106 J D 1.1 x 106 J 11 The figure shows some air trapped above the mercury in an inverted glass tube. If the atmospheric pressure is 750 mm Hg, the pressure exerted by the trapped air is A 30 mm Hg. B 80 mm Hg. C 720 mm Hg. D 800 mm Hg. 80 mm 720 mm 50 mm trapped air mercury 0.4 m 0.6 m 0.8 m 0.4 m

6 12 The pipes are filled with an incompressible liquid. When a force is applied to the brake pedal, the pressure in the liquid increases and applies a force to each of the four wheels. The area of the piston connected to the brake pedal is 8 cm2. The area of each piston connected to the brakes is 12 cm 2. A force of 800 N is applied by the foot to the brake pedal. What is the force applied to each brake? A 300 N B 530 N C 1200 N D 4800 N 13 Illuminated smoke particles, suspended in air, are viewed with a microscope. They are seen to move randomly. This is because the smoke particles are A bombarded continually by air molecules. B moved about by convection currents. C shaken by the vibration of the molecules within them. D supplied with energy by the light illuminating them. 14 The pressure of a gas in a cylinder is the same at all points in the cylinder. Which statement explains this? A The molecules of the gas are all the same size. B The molecules of the gas attract one another. C The molecules of the gas move at different speeds. D There are many molecules, all moving at random. force from pistons on brakes force from foot on brake pedal

7 15 A boy places a marshmallow near the fire. How is energy transferred from the fire to the marshmallow? A By radiation only B By convection only C By conduction and convection D By convection and radiation 16 When a person holds the door knob made of metal, the knob feels cold. This is because the knob A has a high heat capacity B has a high specific heat capacity C is at a lower temperature than its surroundings D conduct heat away from her hands faster 17 In car engines, a coolant is used to transport heat away from the engine to be dissipated to other parts of the car. The liquid that is used as a coolant in motor car engines should have a A low specific heat capacity. B high specific heat capacity. C constant heat capacity. D low specific latent heat of vaporization. 18 A 500 g mass of copper is heated for 0.75 minutes by a heater which produces thermal energy at a constant rate of 80 J/s. The specific heat capacity of copper is 360 J / (kg ℃). What is the rise in temperature? A 0.20 ℃ B 0.30 ℃ C 3.0 ℃ D 20.0 ℃ fire hand stick marshmallow

8 19 Some wax in a test tube was heated and then allowed to cool. The temperature-time graph is shown below. Which of the following statement is correct? A Along PQ, molecules are losing internal energy. B Along QR, latent heat is given out and molecules are gaining potential energy. C Along QR, molecules are losing kinetic energy. D Along RS, latent heat is further lost 20 The graph shows the variation of the displacement of particles with distance along a transverse wave at an instant in time. The wave is moving to the right. Which position along the wave corresponds to a point where particles in the wave are travelling the fastest upwards? temperature time P Q R S displacement distance direction of travel of wave

9 21 Ultrasound has a number of uses in engineering and medicine. What is ultrasound not used for? A sonar B medical scanning of soft tissue C quality control D sterilising medical equipment 22 The echo sounder of a ship transmits a pulse of sound which is reflected back to the ship by a shoal of fish directly below the transmitter. The time between the transmission and the reception of the pulse by the ship is 0.10 s. The speed of sound in sea water is 1200 m/s. At what depth is the shoal of fish found? A 60 m B 120 m C 600 m D 1200 m 23 Ultraviolet radiation, radio waves and X -rays are part of the components of the electromagnetic spectrum. Which of the following shows these components arranged in order of increasing frequency? A radio waves, ultraviolet, X-rays B radio waves, X-rays, ultraviolet C X-rays, radio waves, ultraviolet D X-rays, ultraviolet, radio waves

10 24 A plastic tube is immersed in a liquid of refractive index 1.4. Light travelling i