Sec 4 Science Physics SA2 2018 Chung Cheng

1 Preliminary Examination 2018 Secondary 4 Express / 5 Normal Academic Candidate Name Register No Class Science Physics Paper 1 Date: 24 Aug 2018 5076, 5077 Duration: 1 h (with Chemistry/Biology) READ THESE INSTRUCTIONS FIRST Setter: Mr Thong Nai Kee This paper consists of 9 printed pages, INCLUDING the cover page. CHc CHUNG CHENG HIGH SCHOOL YISHUN Уி CCCCCCCCCCCCHc Answer all questions in the OMS provided. You may use a soft pencil for any diagrams, graphs or rough working. Do not use paper clips, highlighters, glue or correction fluid. For examiner’s use 20 www.KiasuExamPaper.com 84

2 1. The diagram below shows a pair of vernier calipers set to measur e a metal pipe. Given that the pipe has an internal diameter of 1.02 cm, what is the thickness of the wall of the metal pipe? A 0.28 cm B 0.38 cm C 0.56 cm D 0.76 cm 2. Which of the following distance- time graph best represents that of a rock, which is dropped from a tall building? Assume that air resistance is negligible A B C D. distance time distance time distance time distance time www.KiasuExamPaper.com 85

3 3. An object is moving to the right in a straight line with a constant speed. Which of the following statements is true ? A There are no forces acting on the object. B There is a larger number of forces acting on the object to the right than to the left. C There is only one force acting on the object and it is acting to the right. D The resultant force acting on the object is zero. 4. The diagram below shows a single brick and a pile of three bricks. ALL the bricks are identical. Which of the following statements is true? A The pile of bricks has the same density but three times the volume and mass of the single brick. B The pile of bricks has the same mass but three times the density and volume of the single brick. C The pile of bricks has the same volume but three times the density and mass of the single brick. D The pile of bricks has three times the mass, volume and density of the single brick 5. The diagram shows a uniform cube of weight 100 N on a rough surface. What is the horizontal force F needed to just lift the cube? A 50 N B 100 N C 200 N D F depends on the friction between the cube and the rough surface. 100 N F www.KiasuExamPaper.com 86

4 6. A girl of weight 450 N runs up a flight of 20 steps in 10.0 s. Each step has a height of 10 cm. What is the average power developed by the girl ? A 22.5 W B 90 W C 225 W D 900 W 7. A girl of weight 450 N runs up a flight of 20 steps in 10.0 s. Each step has a height of 10 cm. What is the average power developed by the girl ? A 22.5 W B 90 W C 225 W D 900 W 8. A cube of ice is heated to water, then to steam. Which of the following is true? A The molecules expand as ice changes to steam. B The molecules move closer to one another as ice changes to steam. C The molecules move slower as ice changes to steam. D The forces of attraction between molecules decreases as ice changes to steam. 9. A piece of aluminium foil is shiny on one side and dull on the opposite side. When it is used to wrap around food to be cooked in a barbecue fire, which side of the foil should face the fire and why? Side facin g the fire Reason A dull better absorber of heat B dull better conductor of heat C shiny better reflector of heat D shiny better conductor of heat 10. The diagram below shows three toy ducks floating on water, movin g up and down as a wave travels to the right with a velocity of 3 m/s. T he distance between P and Q is 2 m. Which of the following is the frequency of the wave? A 0.75 Hz B 1.33 Hz C 1.5 Hz D 6.0 Hz 3 m/s 2 m R Q P www.KiasuExamPaper.com 87

5 11. Which of the following is always true about wave motion? A The particles always move perpendicular to the wave. B The particles always move parallel to the wave. C The particles always move along with the wave. D Energy is transmitted as the wave moves. 12. Which of the following thin converging lens has the highest refractive index? 13. An object 5.0 cm high is placed 2.0 cm from a converging (convex) lens which is being used as a magnifying glass The image produced is 6.0 cm from the lens and is 15 cm high. What is the focal length of the lens? A 2.0 cm B 3.0 cm C 4.0 cm D 6.0 cm A 1 cm B 1.2 cm C 1.7 cm D 2.2 cm www.KiasuExamPaper.com 88

6 14. Which of the following system is not an application of electromagnetic waves? A Sonar system B Radar system C Infra-red system for night navigation D Wire-less telecommunication system 15. A ray of light enters a glass prism and travels along the path as shown in the figure below. What is the refractive index of the glass? A 1.40 B 1.46 C 1.50 D 1.56 16. X and Y are lamps with filaments made from the same material. T he filament of lamp X is thicker and shorter than that of lamp Y. When X and Y are connected to the mains and switched on, which is the brighter lamp and which lamp has the larger resistance? brighter lamp larger resistance A XX B XY C YX D YY www.KiasuExamPaper.com 89

7 17. Diagram 1 shows a resistor connected to a battery, an ammeter and a voltmeter. The ammeter reading is 0.5A and the voltmeter reading is 3.0 V A second identical resistor is now connected in parallel with th e first resistor, as shown in diagram 2. What are the ammeter and voltmeter readings in the circuit shown in diagram 2? ammeter reading / A vo ltmeter reading / V A 0.5 3.0 B 0.5 6.0 C 1.0 1.5 D 1.0 3.0 18. An electron is placed near a point charge as shown below. In wh ich direction will the electron move? e A B C D – www.KiasuExamPaper.com 90

8 19. Four metal rods are placed, one at a time, inside of coil of copper wire. The table below gives the results of the experiment. Which rod would be the most suitable to use for the core of a c oil in a circuit breaker? metal rod number of paper clips picked up when there is current in the coil number of paper clips still attracted when the current is switched off A 10 B 20 2 C 35 0 D 35 30 Coil of copper wire www.KiasuExamPaper.com 91

9 20. A wire is suspended between two magnets. The ends of the wire AB a r e connected to a d.c. supply and the current flows through the wire as shown in the figure. Which of the following describes how the wire AB will move? A Wire AB will move into the paper. B Wire AB will move out of the paper. C Wire AB will move towards the right D Wire AB will remain stationary. ********* End of Paper 1 *********** MCQ Answers SCIENCE PHYSICS Q 1 – 5 : BBDAA Q 6 – 10 : BBDAA Q 11 – 15 : DABAD Q 16 – 20: BDDCD SCIENCE BIOLOGY Q 21 – 15: ADBAC Q 26 – 30 : ACCBC Q 31 – 35: CDCAC Q 36 – 40 : CBCAD www.KiasuExamPaper.com 92

1 Preliminary Examinations (2018) Secondary Four Express / Five Normal Academic Candidate Name Re gister No. Class SCIENCE PHYSICS Paper 2 5076/02, 5077/02 Date: 20 August 2018 Duration: 1 hr 15min No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your name, class and register number in the spaces at the top of this page. Write in dark blue or black pen. You are to use a soft pencil for any diagrams or graphs. Do not use paper clips, highlighters, glue, correction fluid or correction tape. Section A (45 marks) Answer all questions in the spaces provided. Section B (20 marks) Answer any TWO questions in the spaces provided. The number of marks is given in brackets [ ] at the end of eac h question or part question. The use of an approved scientific calculator is expected, where appropriate. Setter: Mr Thon g Nai Kee For Examiner’s Use Section A Section B Total This paper consists of 16 printed pages , INCLUDING the cover page (Уி ) www.KiasuExamPaper.com 93