AES 2026 Physics Prelim P2 QP

This Question Paper consists of 19 printed pages including this page. [Turn over Preliminary Examination Secondary Four Express NAME CLASS INDEX NUMBER Physics Paper 2 6091/02 31 August 2026 1 hour 45 minutes Candidates answer on the Question Paper. Additional materials: NIL READ THESE INSTRUCTIONS FIRST Do not open this booklet until you are told to do so. Write your NAME, CLASS and INDEX NUMBER at the top of this page. SECTION A (70 marks) STRUCTURED QUESTIONS Answer all questions. Write your answers in the spaces provided on the question paper. SECTION B (10 marks) FREE-RESPONSE QUESTIONS Answer one question. Write your answers in the spaces provided on the question paper. For Examiner’s Use Paper 1 40 Paper 2 Section A 70 Paper 2 Section B 10 Paper 3 40 Total % 100 At the end of the examination, hand in this question booklet.

2 6091/4E/PRELIM/26 SECTION A – STRUCTURED QUESTIONS (70 marks) Answer all the questions in the spaces provided. 1 An airplane with mass 250 000 kg is moving at constant height . It then experiences sudden vertical movements due to severe air turbulence. The figure below shows how its vertical velocity changes over 100 s , where upward velocity is taken as positive. (a) State the time which the plane first met with air turbulence. time = ………………… [1] (b) Explain, in terms of forces, the motion of the airplane between t = 48 s and t = 60 s. …………………………………………………………………………………… …………………………………………………………………………………… …………………………………………………………………………………… …………………………………………………………………………………… …………………………………………………………………………………… [2] (c) Calculate the maximum magnitude of the acceleration experienced by the airplane during the 100 s. maximum acceleration = ………………… [2] time / s 20 40 60 80 100 4.0 2.0 0 -2.0 -4.0 velocity / m/s

3 6091/4E/PRELIM/26 [Turn Over 2 A man accelerates along a straight, level road on an electric scooter at 1.5 m/s2 for 40 m. The total mass of the man and the scooter is 90 kg. A constant resistive force of 45 N acts on the man and the scooter. (a) Determine the driving force provided by the motor of the scooter. driving force = ………………… [2] (b) The efficiency of the motor is 60%. Calculate the total energy transferred by the battery to the motor. total energy = ………………… [2] (c) G is the centre of gravity of the man. The rider decides to step closer to the rear wheel while maintaining an upright position. Explain how this shift in position affects the moment about the rear wheel. …………………………………………………………………………………… …………………………………………………………………………………… …………………………………………………………………………………… …………………………………………………………………………………… [2] rear wheel G

4 6091/4E/PRELIM/26 3 A beaker of cold water is placed onto a hotplate. The hotplate is then turned on. (a) Describe the change in internal energy of the water. …………………………………………………………………………………… …………………………………………………………………………………… [1] (b) State the main thermal process occurring throughout the water. …………………………………………………………………………………… [1] (c) Explain, in terms of its particles, how energy is transferred from the hotplate to the base of the beaker. …………………………………………………………………………………… …………………………………………………………………………………… …………………………………………………………………………………… …………………………………………………………………………………… [2] (d) The total weight of the beaker and the water is 4.8 N. The diameter of the base of the beaker is 8.0 cm. Calculate the pressure exerted by the beaker on the top surface of the hotplate, giving your answer to appropriate significant figures. pressure = ………………… [2]

5 6091/4E/PRELIM/26 [Turn Over 4 Ultrasound waves are used to produce images of an unborn child. An emitter- receiver probe is placed on the mother’s skin, as shown in the diagram below. (a) Describe ultrasound in terms of its particle vibration. …………………………………………………………………………………… …………………………………………………………………………………… …………………………………………………………………………………… [1] (b) The emitted pulse took 0.03 2 ms to return to the probe. The speed of ultrasound in human tissue is 1500 m/s. Calculate the distance between the emitter and the unborn child. distance = ………………… [2] (c) Suggest how the method of obtaining an image using ultrasound differs from that of X-rays. …………………………………………………………………………………… …………………………………………………………………………………… …………………………………………………………………………………… [1] emitter-receiver probe

6 6091/4E/PRELIM/26 5 (a) (i) Define electric field. …………………………………………………………………………… …………………………………………………………………………… [1] (ii) Draw the electric field lines between the two charges. [2] (b) A girl combs her hair with a plastic comb. The comb has a negative charge now. (i) Explain how her hair becomes charged. …………………………………………………………………………… …………………………………………………………………………… …………………………………………………………………………… [1] (ii) The girl then holds the comb over a small piece of metal foil. Explain why the foil jumps up and sticks to the comb. …………………………………………………………………………… …………………………………………………………………………… …………………………………………………………………………… …………………………………………………………………………… [2] - + small piece of foil

7 6091/4E/PRELIM/26 [Turn Over 6 A resistance wire PQ is connected to a battery with an electromotive force (e.m.f.) of 9.0 V. The light bulbs are identical, and each have a resistance of 1.5 Ω. The current flowing through each bulb is 2.0 A. (a) Define electromotive force (e.m.f.). …………………………………………………………………………………… …………………………………………………………………………………… [1] (b) Determine the potential difference across each bulb. potential difference = ………………… [1] (c) Calculate the resistance of wire PQ. resistance = ………………… [2] (d) PQ is replaced by another wire of similar length and thickness is made of a metal of higher resistivity. Explain any change to the brightness of the bulbs. …………………………………………………………………………………… …………………………………………………………………………………… …………………………………………………………………………………… …………………………………………………………………………………… [2] P Q 9.0 V

8 6091/4E/PRELIM/26 7 The figure shows a simple circuit of a shower system connected to the mains supply. The shower system is fitted with two 230 V, 2.0 kW heating coils. (a) Explain why the fuse and switch are placed along wire X. …………………………………………………………………………………… …………………………………………………………………………………… …………………………………………………………………………………… …………………………………………………………………………………… [2] (b) A 20 A fuse is used in the circuit. Explain whether this is a suitable fuse rating to use. …………………………………………………………………………………… …………………………………………………………………………………… [3] (c) The mains plug used in this circuit does not have a third wire. State the name of this third wire and suggest why this wire is not present in this circuit. name of wire: …………………… suggestion: …………………………………………………………………….. …………………………………………………………………………………… [2] shower water pipe inlet water pipe outlet heating coils 230 V wire X

9 6091/4E/PRELIM/26 [Turn Over 8 A flexible, light copper wire is suspended loosely between two insulated supports. A section of the wire hangs between the two magnetic poles of a strong U-shaped magnet. The wire is connected to a direct current (d.c.) power supply and a switch. When