Sec 4 Science Physics SA2 2018 Yuan Ching

Name: Class: Index No: Yuan Ching Secondary School End-of-year Examination 2018 Secondary Three Express SCIENCE (PHYSICS) 5076/01 Paper 1 Multiple Choice 12 Oct 2018 Papers 1: 1 hour Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name, class and index number on the Answer Sheet in the spaces provided unless this has been done for you. 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. Read the instructions on the Answer Sheet very carefully. Answers to Paper 1 and Paper 2 must be handed in separately. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. You are advised to spend no more than 30 minutes on Paper 1. You may proceed to answer Paper 2 as soon as you have completed Paper 1. Any rough working should be done in this booklet. The use of an approved scientific calculator is expected, where appropriate. This document consists of 6 printed pages. www.KiasuExamPaper.com 330

2 1 The diagram shows a vernier scale placed against a ruler. What is the vernier reading? A 3.90 cm B 3.93 cm C 4.23 cm D 4.25 cm 2 A sea breeze happens in the day. An explanation of the sea bree ze contains only five statements. 1 Density of the air decreases 2 Less dense air rises 3 The air above the land is heated and expand 4 Land mass warms up faster than the sea in the day 5 Cooler air from the sea moves in to form sea breeze What is the correct order of these statements? A 1 ĺ 2 ĺ 3 ĺ 4 ĺ 5 B 1 ĺ 2 ĺ 5 ĺ 3 ĺ 4 C 4 ĺ 3 ĺ 1 ĺ 2 ĺ 5 D 4 ĺ 3 ĺ 5 ĺ 1 ĺ 2 3 What is the name of the property of a body that resists a chang e in its state of rest or motion? A Mass B Speed C Density D Acceleration 4 A portable generator can supply 69 120 000 J of electrical energy in 24 hours. What is the average power output of the generator? A 27 W B 800 W C 19 200 W D 2 880 000 W www.KiasuExamPaper.com 331

3 P Q A B C D 5 The speed-time graph for a cyclist is shown below. The mass of the cyclist with the bike is 70 kg. What is the resultant force on the cyclist with bike? A 140 N B 350 N C 3500 N D 14000 N 6 A uniform plank is balanced at the centre by a pivot. John plac ed block P on the plank as shown in the diagram below. Block Q is made of the same mate rial as P but is smaller in volume. Where should John place block Q to keep the plank in equilibrium? 7 A small table weighing 80 N stands on four legs, each having an area of contact of 0.001 m2. What is the pressure of the table on the floor? A 20 kPa B 80 kPa C 20 000 kPa D 80 000 kPa www.KiasuExamPaper.com 332

4 8 A nylon jacket is filled with feather and down. Down is the fur found at the chest area of birds. Which of the following best explain how the jacket keeps the user warm in winter? A Nylon is shiny and is a poor absorber of cold. B Feather is a poor conductor of heat. C Down is very fine and stops convection current from getting set up. D Feather and down is able to trap air, and air is a poor conductor of heat. 9 Which form of energy, that molecules have, is related to temperature? A nuclear energy B kinetic energy C potential energy D thermal energy 10 Molten glass are poured onto a stick to be moulded into glass ba ll. The glass cools to its freezing point and begins to solidify. As the glass solidifies, its temperature A decreases and energy is lost from the glass. B remains the same and energy is lost from the glass. C decreases and no energy is lost from the glass. D remains the same and no energy is lost from the glass. www.KiasuExamPaper.com 333

5 11 John threw a pebble into the pond and created a ripple as shown below. In two seconds, three complete waves are produced on the surface of the water. The distance between three crests is 14.0 cm. What is the speed of the wave? A 3.11 cm/s B 4.67 cm/s C 7.00 cm/s D 10.5 cm/s 12 Which of the following statements about transverse waves is true? A All transverse waves travels at the speed of 3.0 x 108 m/s in vacuum. B Transverse waves are waves that travels parallel to the direction of its vibration. C All transverse waves require a medium to travel. D All transverse waves can be reflected or refracted. 13 A ray of light travels from vacuum into glass. What is the refractive index of the glass? A sin a / sin d B sin c / sin b C v1 / v2 D v2 / v1 Vacuum Glass a b c d speed = v1 speed = v2 14.0 cm www.KiasuExamPaper.com 334

6 14 The diagram shows a patient having his eyes tested. A chart with letters on it is placed behind him and he sees the chart reflected in a plane mirror. How far away from the patient is the image of the chart? A 2 m B 5 m C 7 m D 10 m 15 Which diagram correctly shows the electric field pattern betwee n two isolated point charges? 2 m 3 m mirror www.KiasuExamPaper.com 335

7 16 A wire has a resistance of 12 ȍ. A second wire, made of the same material, has half the length and half the cross-sectional area. What is the resistance of the second wire? A 3.0 ȍ B 6 .0 ȍ C 12 ȍ D 48 ȍ 17 A 12 V battery is connected across a parallel arrangement of two resistors. What is the reading on the ammeter? A 1.7 A B 3.0 A C 4.0 A D 7.0 A 18 A compass is placed at X beside an electromagnet as shown in the diagram below. Which of the drawings shows the correct direction of the compass needle? 3 Ÿ 12 V 4 Ÿ A X C B www.KiasuExamPaper.com 336

8 19 A combined Audio-Visual unit of a speaker and a television is c ontrolled by one switch. The unit contains a 1.2 kW speaker and a 800 W television. In one week, the television used 4.0 kWh of electrical energy. How much electrical energy is used by the Audio-Visual unit in that one week? A 2.0 kWh B 4.0 kWh C 6.0 kWh D 10 kWh 20 The diagram below shows an upwards force acting on a current-ca rrying wire in a magnetic field. What is the direction of the magnetic field? A to the left B to the right C downward D out of the paper ----- End of Paper ----- Efforts Today Rewards Tomorrow upward force current-carrying wire www.KiasuExamPaper.com 337

1 YUAN CHING SECONDARY SCHOOL Secondary Four Express / Five Normal (Academic) Course Preliminary Examination 2018 CANDIDATE NAME CLASS INDEX NUMBER SCIENCE (PHYSICS) Paper 2 Candidates answer on the Question Paper. No Additional Materials are required. 5076/02 14 September 2018 1 hour 15 minutes READ THESE INSTRUCTIONS FIRST Write your class, index number and name on all the work that you hand in. Write in dark blue or black pen on both sides of the paper. You may use a soft pencil for any diagrams or graphs. Do not use staples, paper clips, highlighters, glue or correction fluid. Section A (45 marks) Answer all questions. Section B (20 marks) Answer any two questions. Candidates are reminded that all quantitative answers should include appropriate units. Candidates are advised to show all their working in a clear and orderly manner, as more marks are awarded for sound use of Physics than for correct answers. At the end of the examination, fasten all work securely together. The number of marks is given in brackets [ ] at the end of each question or part question. The total number of marks for this paper is 65. For Examiner’s Use Section A Section B Total / 65 This paper consists of 15 printed pages. www.KiasuExamPaper.com 338

2 Section A: [45 marks] Answer all the questions in the spaces provided. 1 Fig. 1.1 shows the diagram of a speaker. Fig. 1.1 (a) Sound is being produced and can be heard by everyone in the room. Describe how the sound from the loudspeaker reaches all parts of the room. ……………………………………………………………………………………………. ……………………………………………………………………………………………. ………………………………………………………