Beatty 2026 Physics P1 QP

BEATTY SECONDARY SCHOOL PRELIMINARY EXAMINATION 2026 SECONDARY FOUR EXPRESS / G3 CANDIDATE NAME CLASS REGISTER NUMBER PHYSICS 6091/01 Paper 1 Multiple Choice 14 August 2026 1 hour Additional Materials: Multiple Choice Answer Sheet 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 Multiple Choice Answer Sheet provided. 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 16 printed pages. [Turn over

2 1 A student was instructed to measure the dimensions of a metre rule. What instruments should she use for the length, width and thickness of the metre rule? length width thickness A measuring tape digital calipers digital micrometer B measuring tape digital micrometer digital micrometer C metre rule digital calipers digital calipers D metre rule metre rule digital calipers 2 The list shows some physical quantities. area, displacement, electrical current, energy, potential difference, time How many derived quantities and vector quantities are in the list? derived quantities vector quantities A 3 1 B 3 3 C 4 2 D 4 3 3 A bowling ball is dropped from an aeroplane flying horizontally 200 m above the ground. Assuming g = 10 m/s 2, which graph best shows the vertical displacement D of the bowling ball from the aeroplane over time t? A B C D t/s D/m 0 t/s D/m 0 t/s D/m 0 t/s D/m 0 200 20 200 6.3 20 -200 -200 6.3

3 4 A partially inflated rubber ball is rolling on a field as shown. How many types of contact and non-contact forces are there acting on the rubber ball? contact force non-contact force A 2 2 B 3 1 C 4 1 D 4 2 5 The rear wheel of a car is turned anticlockwise by the engine as the car accelerates in reverse as shown. The front wheel of the car is not powered by the engine. How do the directions of the frictional forces acting on the front and rear wheels of the car compare with the direction of acceleration? front wheels rear wheels A same opposite B same same C opposite opposite D opposite same 6 Which object has the least inertia? object density / kgm-3 volume / m3 A 980 1.20 B 1000 1.16 C 1160 0.98 D 1320 0.87 direction of motion partially inflated rubber ball rear wheel front wheel direction of acceleration

4 7 The diagram shows a block connected by a string on a rough surface. The string passes over a frictionless pulley with a tray of negligible mass attached at the end. A cub e of mass 5.0 kg is placed on the tray as shown. If the tray has an acceleration of 2.0 m/s2, what is the magnitude of the friction between the block and the rough surface? The gravitational field strength is 10 N/kg. A 2.0 N B 8.0 N C 18 N D 32 N 8 A uniform metre rule of weight 1.0 N is resting on a metal wedge and a plasticine wedge at the 30 cm mark and the 80 cm mark respectively as shown. The plasticine wedge will deform if it encounters any force exceeding 0.5 N. At which mark of the metre rule can a glass block of weight 1.0 N be placed closest to the plasticine wedge without the wedge deforming? A 0 cm B 5 cm C 35 cm D 85 cm 5.0 kg rough surface 4.0 kg frictionless pulley cube metal plasticine 30 cm 80 cm 0 cm 100 cm

5 9 The diagram shows a balancing dragonfly toy. The heavy wings of the dragonfly are intentionally set below the head which serves as the pivot. Which statement explains why the toy cannot be designed with its wings held above its head? A The centre of gravity of the dragonfly will be higher than the pivot, making the dragonfly unstable. B The centre of gravity of the dragonfly will be lower than the pivot, making the dragonfly less stable. C The line of action of the weight of the dragonfly will be further from the pivot, making the dragonfly less stable. D The pivot will be directly aligned with the line of action of the weight of the dragonfly, making the dragonfly unstable. 10 A barometer contains mercury mixed with some ethanol as shown. The following data is given on a particular day. atmospheric pressure = 72.5 cmHg density of ethanol = 789 kg/m3 density of mercury = 13 600 kg/m3 gravitational field strength = 10 N/kg What is the height h of the ethanol above the mercury column? A 2.5 cm B 4.2 cm C 19.7 cm D 43.1 cm wings head 70.0 cm h

6 11 An electric generator at a hydroelectric dam has an efficiency of 85%. If the total useful power generated by the generator is 120 MW, what is the rate of energy transferred to the surroundings? A 18 MW B 21 MW C 102 MW D 138 MW 12 Singapore requires a highly reliable energy resource that can continuously provide electricity day and night while minimising its carbon footprint. Based on efficiency, reliability and environmental impact, which energy resource best satisfies these requirements? A fossil fuel B nuclear energy C solar energy D wind energy 13 The diagram shows the path taken by a single pollen grain suspended in water over some time. Which statement correctly explains the motion of the pollen grain? A The pollen grain has particles that vibrate about fixed positions. B The pollen grain is being bombarded by water particles in random directions. C The pollen grain is bombarding water particles in random directions. D The pollen grain is following the path of least resistance. 14 A mechanic pumps air into a tyre without any change in volume and temperature. Which statement best explains why the pressure in the tyre increases? A The density of the air in the tyre has increased. B The distance between the air particles has decreased. C The force of collision between the air particles and the tyre has increased. D The frequency of collision between the air particles and tyre has increased. pollen grain water

7 15 An unlit matchstick is placed close to a very hot flame from a Bunsen burner. Why does the matchstick not light up? A The flame is not hot enough. B The air is a poor thermal conductor. C The matchstick is a better thermal conductor than the surrounding air. D The matchstick can only be lit by striking it on a rough surface. 16 In winter, it is a common practice to wear several layers of clothes to keep warm. Four statements are made on this practice. statement 1 The fabrics used are poor thermal conductors. statement 2 The layers of air trapped are poor thermal conductors. statement 3 The clothes reduce the amount of body heat emitted. statement 4 Clothes make convective currents less likely to occur. Which statements best explain why this practice keeps people warm in winter? A 1 and 2 B 1, 2 and 3 C 1, 2 and 4 D 2, 3 and 4 17 Two blocks, X and Y, are made of the same metal and are heated by heaters with the same power rating. The graph shows the variation of temperature with time. What is the ratio of the mass of X to the mass of Y? A 0.25 B 0.33 C 0.75 D 3.0 time/min temperature/°C 0