USS 2024 SCIPHY Sec 4E PRELIM P1

USS PRELIM 2024/5086/01 Sci Phy Chem Page 1 of 16 UNITY SECONDARY SCHOOL PRELIMINARY EXAMINATION SECONDARY FOUR SCIENCE (PHYSICS, CHEMISTRY) 5086/01 Paper 1 Multiple Choice 28 Aug 2024 1 hour Additional Materials: Multiple Choice Answer Sheet MARKS /40 READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluids. Write your Name, Form Class, Index Number and Teaching Group on the Question Paper and Answer Sheet in the spaces 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. A copy of the Data Sheet is printed on page 15. A copy of the Periodic Table is printed on page 16. The use of an approved scientific calculator is expected, where appropriate. This paper consists of 16 printed pages, including this cover page. [Turn over Name: Form Class Index No Teaching Group O

USS PRELIM 2024/5086/01 Sci Phy Chem Page 2 of 16 1 Which quantity is a base quantity? A speed B energy C force D temperature 2 Which pair consists of two vector quantities? A acceleration and weight B density and velocity C energy and force D pressure and work done 3 A car takes 60 minutes to travel 100 km along a main road and then 30 minutes to travel 20 km along a side road. What is the average speed of the car for the whole journey? A 40 km/h B 70 km/h C 80 km/h D 100 km/h 4 Which statement about a gravitational field is correct? A A gravitational field is a region in which an object experiences a force because it is magnetic. B A gravitational field is a region in which an object experiences a force because of its mass. C The gravitational field is the amount of force acting on a unit mass. D The strength of the Moon’s gravitational field is less than the Earth’s because it has no atmosphere. main road 100 km 60 minutes side road 20 km 30 minutes start finish

USS PRELIM 2024/5086/01 Sci Phy Chem Page 3 of 16 5 One side of a vertical garden fence has an area of 4.0 m2. A strong wind blows on one side of the fence and increases the pressure to 105 kPa. The pressure on the other side of the fence is 103 kPa. What is the resultant force on the fence? A 500 N B 8 000 N C 16 000 N D 420 000 N 6 A 300 N force is applied to a box in the direction XY in order to move it up a ramp of the dimensions shown. How much work is done when moving the box from X to Y? A 900 J B 1200 J C 1500 J D 3000 J 7 Four bars, all exactly the same size, are placed with one end in boiling water. The times taken for the temperature of the other end to increase by 2 °C are measured. material of bar time for 2 °C rise/ s aluminium 10 copper 5 cork 800 foam 1200 To make a large metal tank with the least heat loss, which materials should be used for the tank and its insulation? tank insulation A aluminium cork B aluminium foam C copper cork D copper foam 4 m 3 m X Y

USS PRELIM 2024/5086/01 Sci Phy Chem Page 4 of 16 8 The diagram shows a crystal being heated in a beaker of water. The crystal releases a dye that shows how the water circulates around the beaker. What is happening to cause the water above the crystal to rise? A The water contracts and its density decreases. B The water contracts and its density increases. C The water expands and its density decreases. D The water expands and its density increases. 9 The diagram shows a graph of wave motion. Which quantities are shown by distances P and Q? P Q A amplitude period B amplitude wavelength C half the amplitude period D half the amplitude wavelength heat crystal displacement time P Q

USS PRELIM 2024/5086/01 Sci Phy Chem Page 5 of 16 10 An X-ray machine uses X-rays of wavelength 10-10 m. They travel with a speed of 3 x 108 m/s. What is the frequency of these X-rays? A 0.3 x 10-18 Hz B 3.0 x 10-2 Hz C 0.3 x 102 Hz D 3.0 x 1018 Hz 11 Radio waves, visible light and microwaves are all part of the electromagnetic spectrum. What is the correct order of increasing wavelength? shortest wavelength longest wavelength A visible light microwaves radio waves B visible light radio waves microwaves C microwaves visible light radio waves D radio waves microwaves visible light 12 The diagram shows a ray of light striking a plane mirror. What is the angle of incidence if the total angle between the incident and reflected rays is 80 °? A 40 ° B 50 ° C 80 ° D 100 ° 13 Which statement about the image formed by a thin converging lens is correct? A It is always real and upright. B It is always real and inverted. C It is always virtual and upright. D It may be either virtual or real. 14 An electric lamp uses energy at the rate of 48 W with a 12 V supply. How much charge passes through the lamp in 2.0 seconds? A 0.25 C B 0.50 C C 2.0 C D 8.0 C

USS PRELIM 2024/5086/01 Sci Phy Chem Page 6 of 16 15 The diagram shows a cell connected in series with an ammeter and three resistors (10 Ω, 20 Ω, 30 Ω). The circuit can be completed by a moveable contact M. When M is connected to X, the ammeter reads 0.6 A. What is the ammeter reading when M is connected to Y? A 0.1 A B 0.2 A C 0.3 A D 0.6 A 16 The circuit diagram shows a 1 Ω resistor connected in series with a paralle l arrangement of a 2 Ω resistor and a 5 Ω resistor. The current readings through the parallel arrangement are shown. What is the reading on the voltmeter? A 10 V B 12 V C 15 V D 17 V 17 A person uses a 3 kW electric fire for 2 hours and a 2 kW heater for 4 hours. What is the total cost if the price of electrical energy is $0.25 per unit (kilowatt-hour)? A $3.50 B $3.00 C $2.00 D $1.50 A Z M X Y 10 Ω 20 Ω 30 Ω 1 Ω 2 Ω 5 Ω 5 A 2 A A A V

USS PRELIM 2024/5086/01 Sci Phy Chem Page 7 of 16 18 A plug is wrongly wired as shown. It is connected to an old vacuum cleaner which has a metal case. What would be the effect of using the plug wired in this way? A The fuse in the plug would blow. B The metal case would be live. C The neutral wire would melt. D The vacuum cleaner would catch fire. 19 A wire carries a current and hangs vertically. The diagram shows the magnetic field around the wire, when viewed from above.