PHS 2022 Prelim 4N ScPhy P1 QP MS

1 Name: ...................................... Register/Index Number: ............... Class: .............. PRESBYTERIAN HIGH SCHOOL SCIENCE (PHYSICS) 5105/01 Paper 1 Multiple Choice July 2022 Wednesday 1 hour 15 minutes Papers 1 and 2 PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL PRESBYTERIAN HIGH SCHOOL 2020 SECONDARY FOUR NORMAL (ACADEMIC) PRELIMINARY EXAMINATION INSTRUCTIONS TO CANDIDATES DO NOT OPEN THIS QUESTION PAPER UNTIL YOU ARE TOLD TO DO SO. Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name, class and register number on the Answer Sheet in the spaces provided. There are twenty 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. 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. Setter: Mr Edmund Choo Vetted by: Mr Sherman See

2 [Turn over This question paper consists of 10 printed pages.

3 [Turn over 1 A student measures the volume of a cork. He puts some water into a measuring cylinder and then one glass ball. He puts the cork and then a second, identical glass ball into the water as shown. Diagram 1 shows the first water level. Diagram 2 shows the water level after one glass ball is added. Diagram 3 shows the water level after the cork and the second glass ball are added. What is the volume of the cork? A 30 cm3 B 40 cm3 C 50 cm3 D 100 cm3 2 The world record timing for the 800 m race is 1 min 41 seconds. What is the average speed of the runner in m / s ? A 5.67 B 7.92 C 19.5 D 567

4 [Turn over 3 The graph shows how the distance of a car varies over a period of 10 s. Which describes the motion of the object between X and Y, and between Y and Z? between X and Y between Y and Z A accelerating constant speed B constant speed at rest C decelerating at rest D decelerating constant speed 4 A metal rod rest in equilibrium and is supported by a pivot and a string as shown. Three forces of size R, W and T act on the rod. How are the sizes of the forces related? A R + T = W B R = W + T C T = R + W D W = T distance T R W

5 [Turn over 5 A piece of uniform cardboard is cut into two pieces, labelled as X and Y as shown. Which statement about X and Y is not true? A X has a greater density than Y B X has a greater mass than Y C X has a greater volume than Y D X has a greater weight than Y 6 The diagram shows a beam. Without any weight, the beam balances at its centre. Three weights are hung as shown. At which point should a load of 1 N balance the beam? 7 Two cubes are made from the same material. One has sides of length 1 cm while the other has sides of length 2 cm. Which statement about the pressure exerted by these cubes on the ground is correct? A both the cubes have the same pressure B cannot de determined when density is unknown C the bigger cube has higher pressure D the smaller cube has higher pressure X Y A B C D 2 N

6 [Turn over 8 A student runs up a flight of stairs. Which information is not needed to calculate the power of the student? A the height of the flight of stairs B the length of the flight of stairs C the time taken to run up the stairs D the weight of the student 9 The turbine of a hydro-electric power station is built below the level of a lake as shown in the diagram. Calculate the energy gained by the turbine as 1000 kg of water falls down the pipe to the turbine? (The gravitational field strength is given as 10 N/kg.) A 300 000 J B 2 000 000 J C 3 000 000 J D 20 000 000 J

7 [Turn over 10 The outlet of a glass syringe is sealed so that air is trapped below the piston. Which of the following explains why the piston begins to rise when the syringe is placed in hot water? A convection currents in the syringe cause the piston to move upwards B the gas molecules expands and become bigger C the gas molecules move faster and collides with the piston more frequently D the piston becomes heated and rises up 11 The diagram shows a heat sink used for keeping computer components cool. Why are these heat sink make of metals? A metals are good conductors B metals are good radiator C metals have more surface area D metals make convection more efficient 12 Which of the following results in a decrease of internal energy of a piece of metal?

8 [Turn over A metal absorbs energy from the sun B metal changes from liquid to gas C metal changes from liquid to solid D metal is heated up by a Bunsen burner 13 A wave travels at a speed of 10 m / s. The diagram below shows how the displacement of the wave changes with time. What is the wavelength of the wave? A 1.0 m B 2.0 m C 10 m D 20 m 14 Which of the following is an example of a longitudinal wave? A infra-red waves B ultra-sound waves C ultra-violet waves D water waves displacement/m t/s 0.2 0 0.5 1 1.5 2

9 [Turn over 15 Which of the following component of the electromagnetic spectrum has the highest frequency? A infra-red waves B radio waves C microwaves D violet light 16 When sound waves are propagated through air, areas of increased and decreased pressure are created. What is the area of increased pressure known as? A amplitude B compression C period D rarefaction 17 A dry cell is connected to a light bulb as shown. What do the directions of X and Y refer to? X Y A conventional current conventional current B conventional current electron flow C electron flow conventional current D electron flow electron flow X Y

10 [Turn over 18 The diagram below shows ammeter readings in a circuit showing four identical resistors connected to a dry cell. Which ammeter reading is not correct? 19 The diagram shows a circuit. What is the reading on the voltmeter when the switch is opened, and the reading when it is closed? voltmeter reading when switch is opened /V voltmeter reading when switch is closed /V A 3 3 B 3 6 C 6 3 D 6 6 A 3 A D 3 A B 1 A C 2 A 6 V 3 Ω 3 Ω A V