NYGH-2022-S4-EOY-Physics-P1

Class Register Number Name End-of-Year Examination 2022 Secondary 4 PHYSICS Paper 1 Multiple Choice 45 minutes Tuesday 11 October 0845 – 0930 No Additional Materials are required READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction tape/fluid. Write your name, register number and class on the Question Paper and on the Answer Sheet in the spaces provided. There are thirty 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 in the spaces provided 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. Take the acceleration due to gravi ty g (or gravitational field strength) to be 10 m s -2 (or 10 N kg -1) near the Earth’s surface. This document consists of 11 printed pages and 1 blank page. Setters: GHP & AWL NANYANG GIRLS' HIGH SCHOOL [Turn over

2 1 The figure on the left shows the reading of a vernier caliper when the jaws are closed. The figure on the right shows the reading of the same vernier caliper when it measures the diameter of a rod. What is the actual diameter of the rod? A 5.79 cm B 5.83 cm C 5.89 cm D 5.93 cm 2 A table tennis ball is released from rest such that it falls vertically to the ground and bounces back upwards. Which velocity-time graph best represents this motion? Assume air resistance is negligible, and take the downward direction as positive. A B C D time velocity 0 time velocity 0 time velocity 0 time velocity 0 1 0 0 10 cm 5 6 7 0 10 cm

3 [Turn over 3 A ticker-tape timer is used to investigate the movement of a toy car. The frequency of the timer is 50 Hz and a portion of the tape is shown below. What is the average acceleration of the toy car? A 400 cm s-2 B 1900 cm s-2 C 2200 cm s-2 D 2500 cm s-2 4 A brick is placed on a balance X and then on a balance Y. What is measured by each balance? balance X balance Y A mass mass B mass weight C weight mass D weight weight 5 Two boxes A and B , of masses 2.0 kg and 4.0 kg respectively, are placed on a smooth horizontal floor. The boxes are given a horizontal push of 24 N as shown. What is the normal contact force that box B exerts on box A? A 8 N B 12 N C 16 N D 24 N direction of travel of toy car 1.0 cm 8.0 cm floor 24 N B A

4 6 A box is dragged along a horizontal floor by a 70 N force as shown in the diagram. The box moves with a constant speed to the right. What is the resistive force experienced by the box? A 35 N B 40 N C 61 N D 70 N 7 The diagram shows a balancing toy pivoted on a stand. If the toy is tilted slightly, it does not topple over but returns to its original position. What is the position of the centre of gravity of this toy? A inside a weight B above the pivot C exactly at the pivot D below the pivot 8 A lamp which operates with electrical power of 40 W has an efficiency of 30%. How much useful energy can this lamp produce in two minutes? A 0.10 J B 6.0 J C 24 J D 1 400 J floor 70 N A 30° pivot stand weight weight

5 [Turn over 9 Consider the mercury barometer in the diagram below. What is the pressure at point X inside the mercury? A 300 mm Hg B 600 mm Hg C 760 mm Hg D 900 mm Hg 10 The diagram shows an object O viewed using two plane mirrors M1 and M2. A person looks into the mirrors as shown. At which position is the image of O seen? 11 The diagram shows an incident ray striking a plane mirror MN. What is the angle of reflection if the angle between the incident ray and the reflected ray is 70°? A 20° B 30° C 35° D 55° mercury 1000 800 600 400 200 X mm A B D C eye M1 M2 incident ray M N

6 12 A beam of white light splits into several colours when it passes through a glass prism. Two of these colours are shown below. Which statement accounts for this phenomenon? A Red light is slower than violet light in glass. B The refractive index of glass is smaller for red light than for violet light. C Red light has a smaller angle of refraction than violet light when it enters glass. D Red light has a smaller critical angle than violet light in glass. 13 Which row shows parts of the electromagnetic spectrum in order of increasing wavelength? shortest longest A radio waves microwaves X-rays B radio waves X-rays microwaves C X-rays microwaves radio waves D X-rays radio waves microwaves 14 A wave source of frequency 4.0 Hz produces waves. What is the speed and wavelength of these waves? speed wavelength A 8.0 cm s–1 0.020 cm B 10 cm s–1 0.40 cm C 12 cm s–1 3.0 cm D 16 cm s–1 64 cm white light red violet

7 [Turn over 15 A sound wave from a flute has a smaller amplitude than that from a violin. The sound wave from the flute has a shorter period than that from the violin. Which instrument produces the louder sound and which instrument produces the sound of higher pitch? louder higher pitch A flute flute B flute violin C violin flute D violin violin 16 A man stands between two cliffs as shown in the diagram and claps his hands once. Assuming that the speed of sound in air is 340 m s–1, what will be the time interval between the first two echoes? A 0.34 s B 0.68 s C 0.93 s D 1.2 s 17 A battery moves a charge of 650 mC around circuit in 0.20 minutes. What is the current in the circuit? A 54 mA B 3.3 A C 54 A D 3300 A 200 m 85 m cliff 1 cliff 2

8 18 Four identical light bulbs, P, Q, R and S, are connected in a circuit as shown below. Which row shows the brightness of the light bulbs in the correct order from the dimmest to the brightest? dimmest brightest A Q R P B R Q P C P R Q D P S Q 19 A 12 V battery is connected to resistors as shown in the diagram below. What is the current through the ammeter? A 1.3 A B 1.6 A C 4.6 A D 7.6 A 20 A light-dependent resistor and a thermistor are connected in series to a battery. The thermistor’s resistance decreases as temperature rises. Which conditions will give the largest potential difference across the thermistor? A dark and cold B dark and hot C bright and cold D bright and hot P Q R S 2.0 Ω 4.0 Ω 4.0 Ω 6.0 Ω 2.0 Ω A 4.0 Ω 12 V

9 [Turn over 21 Which statement is true about an electrical fuse? A A fuse allows a high current through the circuit without overheating. B A fuse adjusts its resistance to regulate the amount of current in the circuit. C A fuse disconnects the circuit when the temperature is high. D A fuse protects the wiring and appliance from overheating. 22 The power produced in a resistor is P. If the voltage across the resistor is halved, what is the power produced in the resistor? A P 4 B P 2 C 2P D 4P 23 Which effect can only be observed if a metal bar is a magnet? A The metal bar repels the pointer on a compass. B The metal bar attracts a magnet. C The metal bar repels an iron nail. D The metal bar attracts another metal bar. 24 Two current carrying wires, P and Q are arranged as shown. What is the direction of the force on each wire? wire P wire Q A to the left to the left B to the left to the right C to the right to the left D to the right to the right