2025 CHIJ SEC (TP) Physics Prelim Paper 1 QP

CONVENT OF THE HOLY INFANT JESUS SECONDARY Preliminary Examination in preparation for the General Certificate of Education Ordinary Level 2025 CANDIDATE NAME CLASS REGISTER NUMBER PHYSICS Paper 1 Multiple Choice Additional Materials: Multiple Choice Answer Sheet (OMR) 6091/01 03 September 2025 1 hour READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your name, class and register number on the Answer Sheet in the spaces provided unless this has been done for you. 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 Answer Sheet. 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. The use of an approved scientific calculator is expected, where appropriate This document consists of 18 printed pages and 2 blank pages. [Turn over O

2 CHIJSec/2025/OLevelPrelim/6091/01 1 A textbook lists the average width of a human hair as 0.0001 m and the distance between the Earth and the Sun as 1.5 x 1011 m. How are these values expressed with prefixes? average width of a human hair distance between the Earth and the Sun A B C D 1.0 x 10-1 mm 1.0 x 10-1 mm 1.0 x 10-1 µm 1.0 x 10-1 µm 1.5 x 10-1 Tm 1.5 x 10-1 Gm 1.5 x 10-1 Gm 1.5 x 10-1 Tm 2 What is the unit of pressure expressed in base units? A kg / ms2 B kg / ms C kg2 / ms2 D kg / m2s2 3 A pendulum is set in motion and 20 complete swings are timed. The time measured is 30 s. What is the period and the shortest time t for the pendulum to swing from X to Y? period / s time t / s A B C D 0.75 0.75 1.5 1.5 0.75 1.5 1.5 0.75

3 [Turn over CHIJSec/2025/OLevelPrelim/6091/01 4 A robot standing at the bottom of a cliff shoots a ball upwards. The ball drops on top of the cliff after reaching a maximum height of 125 m in 5 s. What is the height of the cliff given that the ball reaches the top of the cliff 7 s after the shoot? (Take g = 10 m/s2 and the height of the robot to be negligible) A 125 m B 115 m C 110 m D 105 m 5 The diagram shows the graph of displacement s against time t for a body moving in a straight line. Which is the graph of speed v against time t for this body? A B C D 6 A bus has a total mass of 12 000 kg. it moves along a horizontal stretch of road at a speed of 10 m/s. It then accelerates, reaching a final speed of 30 m/s after 16 s. What is the size of the average resultant force acting on the bus when it is accelerating? A 7500 N B 9600 N C 15 000 N D 22 500 N s t

4 CHIJSec/2025/OLevelPrelim/6091/01 7 The graph shows the acceleration-time graph of a toy car. If the toy car starts off with an initial velocity of 10 ms-1, what is its velocity at the 7th second? A -10 ms-1 B 10 ms-1 C 20 ms-1 D 30 ms-1 8 The diagrams show four experiments in which a ball falls from the top to the bottom of identical sealed glass tubes. In which experiment does the ball take the shortest time to reach the bottom of the tube? A B C D 9 The diagram shows a uniform beam with three weights hung on it. At which point does a load of 2 N balance the beam? a/ms-2 t/s 2 5 7 4 -3 2

5 [Turn over CHIJSec/2025/OLevelPrelim/6091/01 10 A tractor is being used on rough ground. Where should the position of its centre of gravity be for the tractor to topple? 11 The diagram shows a barometer containing some air in the space above the mercury column. The height of mercury column is 70.0 cm. X is a point 20.0 cm below the surface of the mercury in the tube. The atmospheric pressure is 76.0 cmHg. What is the pressure at point X in the mercury? A 56.0 cmHg B 50.0 cmHg C 26.0 cmHg D 20.0 cmHg 70.0 cm air 20.0 cm X mercury

6 CHIJSec/2025/OLevelPrelim/6091/01 12 A closed tube manometer is connected to an air pump as shown. The manometer is filled with water of density 1000 kg/m3 and the pressure exerted by the trapped air is 190 kPa. What is the air pressure caused by the air pump? A 10 kPa B 190 kPa C 200 kPa D 210 kPa 13 An electric motor took 20 s to lift a 500 N load through a vertical height of 8.0 m. If the efficiency of the motor is 40 %, how much is the electric input power to the motor? A 80 W B 120 W C 333 W D 500 W 14 A gas is trapped in a cylinder with a movable piston as shown. The temperature of the gas is kept constant as the piston is pulled out of the cylinder. What happens to the gas particles? A They collide with the cylinder walls more frequently. B They expand. C They get further apart. D They move slower.

7 [Turn over CHIJSec/2025/OLevelPrelim/6091/01 15 Heat capacity is the energy required to raise the temperature of the object by 1 °C. What does this energy do? A It increases the internal potential energy of the solid molecules. B It increases the vibration among the solid molecules. C It increases the average size of the solid molecules. D It increases the forces of attraction between the solid molecules. 16 Equal masses of two solids X and Y are heated successively in a well-lagged calorimeter. Thermal energy is supplied to both at the same rate. The temperature-time graph for the process is shown. Which statement below is correct? A Solid X has a larger specific heat capacity than solid Y. B Liquid X has a smaller specific heat capacity than liquid Y. C Solid X has a smaller specific latent heat of fusion than solid Y. D Solid X has a smaller specific latent heat of vaporization than solid Y. temperature /  C time / s X Y

8 CHIJSec/2025/OLevelPrelim/6091/01 17 Four bars, all exactly the same size, are each placed with one end in boiling water. The times taken for the temperature of the other end to increase by 2 ºC are measured. material of bar time for 2 ºC rise / s copper aluminium cork styrofoam 5 10 800 1200 To make a large metal tank with the least heat loss, which materials should be used for the tank and its insulation? tank Insulation A B C D aluminium aluminium copper copper cork styrofoam cork styrofoam 18 A student uses a double-walled glass vessel to contain a hot liquid. Which method reduces the heat loss by radiation? A creating a vacuum in the space between the glass walls B painting surface Q black C painting surface R black D painting surface S white air outside space Q R S glass walls hot liquid

9 [Turn over CHIJSec/2025/OLevelPrelim/6091/01 19 A man stands between two cliffs and claps his hands once. An echo is heard which is closely followed by another. The speed of sound is 330 m/s. What is the time interval between the two echoes? A 0.17 s B 0.33 s C 0.67 s D 0.83 s 20 A vibrator generates a travelling wave on a string. The diagram shows the shape of the string at a certain instant. Which is the correct shape of the string between P and Q after half a period?

10 CHIJSec/2025/OLevelPrelim/6091/0