2026 SSP Physics Prelim P2 QP

4B/P HY/PRELIM/2026 SINGAPORE SPORTS SCHOOL PRELIMINARY EXAMINATIONS SECONDARY 4 EXPRESS CANDIDATE NAME CLASS 4B Physics Paper 2 Structured and Free Response 6091/02 Candidates answer on the Question Booklet. 28 Aug 2026 1 hour 45 minutes No Additional Materials are required. Rem inder on Academic Honesty Al l student-athletes are expected to complete this assessment independently. Do not share, discuss, or seek information about this assessment with others who have yet to complete it. Any student-athlete who gives, receives, or attempts to obtain unfair assistance will be considered to have breached academic integrity and will face disciplinary action. As a school, we uphold the value of Integrity. Every student-athlete is expected to demonstrate honesty, fairness, and responsibility in all assessments. RE AD THESE INSTRUCTIONS FIRST Write in dark blue or black pen. You may use a soft pencil for any diagrams, graphs, tables or rough working. Section A Answer all questions. Write your answers in the spaces provided. Section B Answer one question. Write your answers in the spaces provided. Candi dates are reminded that all quantitative answers should include appropriate units. Candidates are advised to show their working in a clear and orderly manner, as more marks are awarded for sound use of physics than for correct answers. The num ber of marks is given in brackets [ ] at the end of each question or part question. This document consists of 19 printed pages and 1 blank page. For Examiner’s Use Q1 7 Q2 7 Q3 5 Q4 9 Q5 8 Q6 7 Q7 7 Q8 10 Q9 10 Q10 or Q11 10 Total 80

1 A U-shaped tube of constant cross-sectional area contains water of density 1000 kg / m 3. Both sides of the U-tube are open to the atmosphere. Fig. 1.1 shows that the water levels in the two sides of the tube are equal. stopper 0.200 m rubber tubing connected to gas supply Fig. 1.2Fig. 1.1 The atmospheric pressure is 1.00 × 105 Pa. The left-hand side of the tube is now connected to a gas supply using a length of rubber tubing. This causes the level of the water in the left-hand side of the tube to drop by 0.200 m, as shown in Fig. 1.2. (a) Calculate the pressure of the gas supply. Give your answer to 3 significant figures. pressure = ......................................................... [3] 2

(b) Fig. 1.3 shows that the gas supply is now connected to a cylinder that contains a piston. cylinder open to the atmosphererubber tubing connected to gas supply piston Fig. 1.3 The pressure of the gas moves the piston to the right. (i) The area of the piston in contact with the gas is 0.025 m2. Calculate the resultant force on the piston. resultant force = ......................................................... [2] (ii) The pressure of the gas causes the piston to move a distance of 0.50 m to the right. Calculate the work done by the gas from the supply on the piston. work done = ......................................................... [2] [Total: 7] 3 [Turn over

2 A large test-tube contains a liquid at room temperature. An electric heater is immersed in the liquid and is switched on. Thermal energy is supplied to the liquid by the heater. The temperature of the liquid increases until it reaches its boiling point. The liquid then starts to change into gas. (a) Describe, in terms of molecules and their motion, how a liquid differs from a gas. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ............................................................................................................................................. [2] (b) Describe what happens to molecules of the liquid as its temperature begins to increase. ................................................................................................................................................... ................................................................................................................................................... ............................................................................................................................................. [1] (c) (i) Explain, in terms of molecules, why a supply of thermal energy is needed to change the liquid into a gas. ........................................................................................................................................... ..................................................................................................................................... [1] (ii) The density of the liquid in the test-tube is 0.86 g / cm 3. The volume of liquid in the test- tube is 50 cm3. The liquid reaches its boiling point. It now absorbs 18 000 J of thermal energy and all of the liquid changes into a gas. Calculate the specific latent heat of vaporisation of this liquid. specific latent heat = ......................................................... [3] [Total: 7] 4

3 A metal container is used to cook food. The metal container has thick walls. Hot cooking oil at a temperature of 120 °C is poured into the container. (a) The outside surface of the container gets hot. Some thermal energy passes through the metal because vibrating atoms in the metal collide with neighbouring atoms and transfer energy to them. Explain how the rest of the thermal energy is conducted through the metal container to the outside surface by another process. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ............................................................................................................................................. [2] (b) The outside surface of the container is brightly polished and shiny. Explain how this allows the container to keep the oil hot for a long time. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ............................................................................................................................................. [2] (c) The metal container is spherical. The spherical container has a smaller surface area than a long, thin container of the same volume. Explain the advantage of using a spherical container. ................................................................................................................................................... ................................................................................................................................................... ............................................