2024 CHR Physics Prelim P1

CHR Preliminary Examination 2024 / Secondary 4 Pure Physics 1 CHRIST CHURCH SECONDARY SCHOOL 2024 PRELIMINARY EXAMINATION FOUR EXPRESS PHYSICS 6091/01 Paper 1 27 Aug 2024 1 hour Additional Material: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write in soft pencil on the Multiple Choice Answer Sheet. 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 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 Multiple Choice Answer Sheet provided. Read very carefully the instructions 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 calculator is expected, where appropriate. ________________________________________________________________________ This Question Paper consists of 18 printed pages including this cover page. 1 [Turn over CANDIDATE NAME CLASS CENTRE NUMBER S INDEX NUMBER

2 1 2 Which of the following shows the most suitable instruments used for the measurements of these given objects? internal diameter of a test-tube thickness of a copper wire A digital calipers digital micrometer screw gauge B metre rule digital calipers C digital micrometer screw gauge digital calipers D measuring tape digital micrometer screw gauge 2 3 3 A student studies some equations: density = mass / volume work done = force x displacement acceleration = change of velocity / time taken How many different vector quantities can be found in these equations? A 2 B 3 C 4 D 5 4 The velocity-time graph shows the motion of an object during a period of 30 s. What is the average velocity of the object during this first 25 s? A 10 m/s B 11 m/s C 17 m/s D 18 m/s 4 5 A cyclist has an initial speed of 5.0 m/s. She is travelling at a uniform deceleration for 3.0 m before she came to a stop. How long did she take to stop? A 0.60 s B 1.2 s C 1.3 s D 3.0 s velocity m/s time s

3 5 Two similar balls are released from a 50 m tall building at the same time. One drops from the top while the other from mid-level. Air resistance is negligible. Which quantity is the same for both balls? A acceleration B average speed C final velocity D time of travel 6 Two identical blocks of concrete, A and B are hung on a rope close to the surface of Earth and the surface of the moon as shown. A sideway force of same magnitude is applied to both blocks of concrete. What statement is correct? A It is easier to move B as it has less weight. B It is more difficult to move A as it has less weight. C Both A and B move with the same ease as they have the same mass. D Both A and B move with the same ease as they have the same weight. 50 m 25 m A B force force earth moon [Turn over

4 7 A truck engine of mass 4500 kg pulls a trailer of mass 1000 kg along a level track is accelerating at 0.10 m/s2. The truck engine is connected to the trailer via a tow bar. Given that the resistive force acting on the truck engine is 10 N per 1000 kg and the resistive force acting on the trailer is 5 N per 1000 kg. What are the forward thrust FE exerted by the engine and the tension in the tow bar? forward thrust FE tension in tow bar A 550 N 0 N B 550 N 105 N C 600 N 0 N D 600 N 105 N 8 A uniform metre rule of weight W is pivoted at the 25 cm mark and held horizontal by a force F applied upwards at the 100 cm mark. The rule is supported by a vertical force P acting at the pivot. What is the magnitude of P? A 1 3 W B 1 2 W C 2 3 W D 4 3 W tow bar 0.10 m/s2

5 9 Four glass objects have square bases of equal area. Which object is the most stable? 10 A balancing toy comprises two weights on each side as shown. It is pivoted at the top of a stand with a base. Which statement concerning the centre of gravity (CG) of balancing toy is correct? A If titled and released, the CG of the toy would not oscillate sideways. B The base raises the CG of the toy to provide stability. C The thin stand raises the CG of this toy to provide stability. D The two weights lower the CG of this toy to below the pivot to provide stability. weight pivot stand base [Turn over

6 11 A simple hydraulic jack is used to lift a load by applying a force F as shown. Which changes to the diameters of the pistons X and Y would allow a greater load to be lifted by the same force, F? diameter of piston X diameter of piston Y A doubled doubled B doubled halved C remained the same halved D halved doubled 12 A box is pulled up with a force F up a rough slope at a uniform speed. Which statement regarding the energy stores of the box is not correct? A Mechanical work is done by the force F on the object as it moves up the slope. B No energy is transferred out to the surrounding due to heating. C The gravitational potential store of the box increases as it moves up the slope. D The kinetic store of the box remains the same as it moves up the slope. 13 Which statement correctly describes the kinetic particle model in liquid during boiling? A The average speed of the particles increases. B The intermolecular forces of attraction between the particles become weaker. C The internal kinetic energy of the particles increases. D The internal potential energy of the particles decreases. F piston X piston Y load

7 14 Four bars of different made of different materials and different sizes are placed at one end of each bar in water at 80 °C. The time taken for the temperature to rise by 2 °C on the other end of the bars are recorded. material size time for temperature to rise by 2 °C / s aluminium 12 copper 3 fibreglass 77 polystyrene 15 The materials are being considered to make a metal tank to keep its contents warm. The metal tank will be insulated. Which materials should be used to make the tank and its insulation? tank insulation A aluminium fibreglass B aluminium polystyrene C copper fibreglass D copper polystyrene 15 A block of brass is heated and its rise in temperature is measured. The amount of energy gained by the block is E. The mass of the block is m. The rise in temperature of the block is T. Which expression gives the specific heat capacity of brass? A m E∆T B m∆T E C E m∆T D E∆T m L ½ L L ½ L [Turn over

8 16 A 550 g of unknown liquid is heated using a 1.5 kW electric heater. The temperature of this liquid over a period time is plotted on a graph shown below. What is the specific latent heat of vaporisation of the substance? A 1.6 J/kg B 270 J/kg C 1600 J/kg D 1900 kJ/kg 17 A dipper vibrates at a frequency of 2.5 Hz in a ripple tank to produce water waves. The wave travels from the deep region to the shallow region as shown. Which statement is correct? A The frequency of the waves increases as it moves from deep to shallow regions. B The speed of the waves in the shallow region is approximately 23