CHIJ 4E Phy Prelim Paper 2 2024

CONVENT OF THE HOLY INFANT JESUS SECONDARY Preliminary Examination in preparation for the General Certificate of Education Ordinary Level 2024 CANDIDATE NAME CLASS REGISTER NUMBER PHYSICS Paper 2 Structured and Free Response Candidates answer on the Question Paper. No Additional Materials are required. 6091/02 23 August 2024 1 hour 45 minutes READ THESE INSTRUCTIONS FIRST Write your class, register number and name on all the work you hand in. Write in dark blue or black ink. You may use an HB pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. Section A Answer all questions. Write yours answers in the spaces provided. Section B Answer one question. Write yours answers in the spaces provided. Candidates are reminded that all quantitative answers should include appropriate units. The use of an approved scientific calculator is expected, where appropriate. Candidates are advised to show all their working in a clear and orderly manner, as more marks are awarded for sound use of physics than for correct answers. The number of marks is given in brackets [ ] at the end of each question or part question. This document consists of 21 printed pages and 1 blank page. [Turn over O

2 CHIJSec/2024/OLevelPrelim/6091/02 Section A Answer all the questions. 1 Fig. 1.1 shows a toy drone. It can hover and travel through air. Fig. 1.1 A student flies the drone on a journey from A to B to C to D at a constant height. Fig. 1.2 is a scale drawing of the path of the drone, viewed from above. Fig. 1.2 (to scale) (a) (i) Determine the total distance travelled by the drone. total distance = ………………….……….[1] (ii) The toy drone makes the journey in 60 s. Calculate the average speed during the journey. average speed = ………………..…………[2]

3 [Turn over CHIJSec/2024/OLevelPrelim/6091/02 (b) (i) State the difference between distance and displacement. …………………………………………………………………………………………………..… …..………………………………………………………………………………………………[1] (ii) Determine the scale used to construct Fig. 1.2 and complete the sentence. 1 cm on the diagram represents ……………………… on the path. [1] (iii) Using Fig. 1.2, determine the displacement of point D from point A. displacement = ……….…………………[1] (c) State what is meant by velocity. …………..……………………………………………………………………………………………… ………………………………………………………………………………………………………..[1] (d) Another toy drone flies directly from point A to point D in 60 s. Explain why the magnitude of the velocity of this toy drone is smaller than the answer in part (a)(ii). …………..……………………………………………………………………………………………… ………………………………………………………………………………………………………….. …………..……………………………………………………………………………………………… ………………………………………………………………………………………………………..[1] [Total: 8]

4 CHIJSec/2024/OLevelPrelim/6091/02 2 A stone falls vertically, hits a rubber mat and rebounds vertically upwards. Fig. 2.1 shows the speed-time graph for the stone. Fig. 2.1 The stone is released at A, hits the rubber mat at B and is in contact with the mat between B and C. D is the highest point reached as the stone rises. (a) Using the information from Fig. 2.1, describe the motion of the stone between A and B. …………..……………………………………………………………………………………………… ………………………………………………………………………………………………………..[1] (b) State how Fig. 2.1 shows that the stone’s maximum height after rebound is lower than the original height that it was released. …………..……………………………………………………………………………………………… …………..……………………………………………………………………………………………… …………..……………………………………………………………………………………………… ………………………………………………………………………………………………………..[2] (c) Determine 1. the change in speed of the stone between B and C, ……………………………………..[1] 2. the change in velocity of the stone between B and C. ..…………….……………………[1] [Total: 5]

5 [Turn over CHIJSec/2024/OLevelPrelim/6091/02 3 A plane, irregular lamina has a mass of 60 g. It hangs from a nail that passes through a small hole, H, near the edge of the lamina. The nail acts as a pivot and the lamina can swing about it. The lamina is held in the position shown in Fig. 3.1, a small distance above a horizontal bench. Fig. 3.1 (Not to scale) The centre of gravity of the lamina is at G. (a) The weight of the lamina is a force that acts downwards. (i) Explain why the lamina experiences this downward force. …………………………………………………………………………………………………..… …..………………………………………………………………………………………………[1] (ii) Calculate the weight of the lamina on Earth. Take g = 10 N/kg on Earth. weight = ……………………………….[2]

6 CHIJSec/2024/OLevelPrelim/6091/02 (b) The weight produces a moment about the pivot through H. (i) Using Fig. 3.1, calculate the moment of the weight about the pivot. moment = ………………………………..[2] (ii) The lamina is now released from the position shown in Fig. 3.1. Describe what happens to the lamina from the time it is released until it stops moving. …………………………………………………………………………………………………..… …………………………………………………………………………………………………..… …..………………………………………………………………………………………………[2] [Total: 7]

7 [Turn over CHIJSec/2024/OLevelPrelim/6091/02 4 Fig. 4.1 shows a man standing under an outdoor heater on a cold evening in Paris, France. Fig. 4.1 Gas in the cylinder at the base of the heater is the fuel for the heater. When the heater is operating, the gas travels to the top of the heater where it burns. (a) State the energy store possessed by the gas. ………………………………………………………………………………………………………..[1] (b) A metal screen surrounding the burning gas is heated by the burning gas until it is red-hot. The hot metal screen warms the man who is standing under it. (i) Describe how the thermal energy in the red-hot metal screen is transferred to the man. …………………………………………………………………………………………………..… …………………………………………………………………………………………………..… …..………………………………………………………………………………………………[2]

8 CHIJSec/2024/OLevelPrelim/6091/02 (ii) At the top of the heater is a metal hood that has a shiny lower surface. Explain why this makes the energy transfer from the metal screen more efficient. …………………………………………………………………………………………………..… …..………………………………………………………………………………………………[2] (iii) The surrounding air temperature decreases and the man puts on a black pullover. Explain one way in which wearing the black pullover helps to keep the man warm. …………………………………………………………………………………………………..… …..………………………………………………………………………………………………[1] [Total: 6]

9 [Turn over CHIJSec/2024/OLevelPrelim/6091/02 5 Microwaves are waves in the electromagnetic spectrum. (a) (i) State the name of waves in one other part of the electromagnetic spectrum that have wavelengths shorter than microwaves. …..………………………………………………………………………………………………[1] (ii) A wave in the electromagnetic spectrum has a wavelength shorter than microwaves. Explain why the frequency of this wave is higher than the frequency of microwaves. …………………………………………………………………………………………………..… …………………………………………………………………………………………………..… …………………………………………………………………………………………………..… …..………………………………………………………………………………………………[2] (b) Microwaves are sometimes used to send telephone messages over long distances. They are sent from large dish aerials on top of high buildings or towers. There are often repeater or booster stations placed between the transmitter and the receiver, as illustrated in Fig. 5.1. Fig. 5.1 State why (i) the aerials are placed on top of high buildings or towers, …………………………………………………………………………………………………..… …..……………………………………………