XMS 2026 Physics P2 QP

This document consists of 20 printed pages and 0 blank page(s). [Turn over Preliminary Examination 2026 CANDIDATE NAME CLASS INDEX NUMBER PHYSICS Paper 2 Secondary 4 Express Setter: Mr. Koh Tat Siang Vetter: Mr. Zhuang Haoyang 6091/02 28 AUG 2026 1 hour 45 minutes Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your name, class and index number on the work you hand in. Write in dark blue or black pen. 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 your answers in the spaces provided. Section B Answer one question. Write your 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. For Examiner’s Use Section A 70 Section B Q ………. 10 Total 80 Parent’s Signature

2 XMSS/Physics/6091/02/Preliminary Examination 2026 Section A [70 marks] Answer all questions. Write your answers in the spaces provided. 1 Fig. 1.1 shows a cube with sides of 4.0 m placed on a flat horizontal surface. The cube is made of material X. Take g to be 10 m/s2. Fig. 1.1 (a) The weight of the cube is 2400 N. Calculate the density of the material X. density = ………………………. [2] (b) State and explain what would happen if the cube is placed into a tank of water. The density of water is 1.0 g/cm3. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. [2] 4.0 m 4.0 m

3 XMSS/Physics/6091/02/Preliminary Examination 2026 [Turn over (c) Fig. 1.2 shows that a smaller cube of sides of 1.0 m is cut away and replaced with a cube of the same size but made of material Y. Fig. 1.2 The density of material Y is 20 kg/m3. Calculate the effective density of the object shown in Fig. 1.2. density = …………………. [3] [Total: 7] 4.0 m 4.0 m 1.0 m 1.0 m material Y material X

4 XMSS/Physics/6091/02/Preliminary Examination 2026 2 Fig. 2.1 shows a system of three masses held in equilibrium. When the tensions, T1, T2 and T3, are balanced, the angle between T1 and the vertical is 69 ° and the angle between T2 and the vertical is 44 °. Fig. 2.1 (not to scale) By means of a scaled diagram drawn in the space below, determine the magnitude of T3 Scale: ………………………. magnitude of T3 = ……………………… [4] [Total: 4] pulley pulley T1 = 6.0 N T2 = 8.0 N T3

5 XMSS/Physics/6091/02/Preliminary Examination 2026 [Turn over 3 Fig. 3.1 shows a steelyard. The steelyard consists of a steel rod PS and a scale pan. For this question consider the steelyard as a single object. At the end P, the scale pan is used to hold additional objects whose total weight is to be measured. The steelyard is suspended at Q and a weight of 2.0 N can be placed anywhere between R and S. Fig. 3.1 (not to scale) When the pan is empty, the 2.0 N weight balances the steelyard at point R. (a) Explain, using the principle of moments, why the weight of the steelyard (which consists of the scale pan and steel rod as one object ) must be acting between P and Q. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. [2] (b) Determine the moment due to the weight of the steelyard. Clearly stat ed its magnitude and direction. magnitude of moment = ………………………… direction of moment = ………………………… [2] (c) Calculate the maximum weight of additional objects that this steelyard can measure. weight = ………………………… [2] [Total: 6] 15 cm 5 cm 60 cm P Q R S scale pan 2.0 N weight steel rod

6 XMSS/Physics/6091/02/Preliminary Examination 2026 4 A stone is thrown into a calm pond. When it hits the water surface at t = 0.0 s, it causes the water surface to vibrate and form a water wave on the surface of the pond moving away from the point where the stones hits the water surface. Fig. 4.1 shows at t = 4.0 s, the displacement, d1 of the water surface from its rest position against the distance, d2 from the point where the stone hits the water surface. Fig. 4.1 (a) It takes 8.0 s for the water wave to complete 4 complete oscillations. Determine the speed of the water wave. speed = …………………….. [3] (b) At t = 4.0 s, a leaf is at position P as shown in Fig. 4.1. State the position of the leaf at t = 5.5 s and describe the movement of leaf from t = 4.0 s to t = 5.5 s. At t = 5.5 s, leaf would be at: d1 = ………………………. and d2 =………………………… ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. [3] [Total: 6] displacement, d1 /cm distance, d2 /m P 0

7 XMSS/Physics/6091/02/Preliminary Examination 2026 [Turn over 5 (a) Fig. 5.1 shows a circuit diagram. Fig. 5.1 When the switch is not closed, the voltmeter shows a reading of 3.5 V. Calculate the resistance of resistor R. resistance = ……………………. [2] (b) The 100  resistor is replaced with a thermistor and the switch is closed as shown in Fig. 5.2. Fig. 5.3 shows shows how the resistance of the thermistor varies with temperature. Fig. 5.2 Fig. 5.3 Describe and explain how the brightness of the bulb in Fig 5.2 will change as the temperature increases from 25 C to 40 C. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. [2] [Total: 4] 100  R 6.0 V 6.0 V thermistor R resistance / temperature / C

8 XMSS/Physics/6091/02/Preliminary Examination 2026 6 Fig. 6.1 shows part of the mains electric circuit in a house. Three lamps A, B, and C, each rated ’60 W , 220 V’ are connected in parallel with each other. An electric fan with a maximum capacity rated at ‘1000 W, 220 V’ is connected to the mains supply as well. The mains supply is 220 V. Fig. 6.1 (a) Explain why the 10 A, 3.1 A and 5 A fuses are all placed on the live wire. ………………………………………………………………………………………….. ………………………………………………………………………………………….. [1] (b) The homeowner wishes to connect more lamps in parallel to lamps A, B and C in the lighting circuit. Determine how many more lamps can be safely connected. number of lamps = …………………………. [2] (c) Explain the function of the earth wire connected to the metal casing of the electric fan. ………………………………………………………………………………….............. ………………………………………………………………………………….............. ………………………………………………………………………………….............. …………………………………………………………………………………………... [2] [Total: 5] metal casing earth lighting circuit A B C

9 XMSS/Physics/6091/02/Preliminary Examination 2026 [Turn over 7 Fig. 7.1 shows a circuit with a solenoid. Fig. 7.1 The switch is closed.