O Lvl Science Physics Bedok South Sec Prelim 2019

1 BEDOK SOUTH SECONDARY SCHOOL PRELIMINARY EXAMINATION 2019 4E5N CANDIDATE NAME CLASS REGISTER NUMBER Science (Physics/ Chemistry) Paper 1 Additional Material: Multiple Choice Answer Sheet 5076 03 Sep 2019 1 hour READ THESE INSTRUCTIONS FIRST Write your class, index number and name on all the work you hand in. Do not use paper clips, highlighters, glue or correction fluid. There are forty questions in this section. Answer all questions. For each question there are four possible answers A, B, C and D. Choose the one you consider to be 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 ded ucted for a wrong answer. Any rough working should be done in this question paper. A copy of the Periodic Table is printed on page ___. Setter: Mr Sean Goh and Ms Corinna Teo This document consists of ___ printed pages including the cover page www.KiasuExamPaper.com 71

2 1 Which of the following consist of only vector quantities? A mass, distance, time B friction, velocity, electromotive force C tension, speed, energy D weight, displacement, electrostatic force 2 The diagram shows two forces X and Y act on an object. Which arrow below shows the possible direction of the resultant force? ABCD 3 The diagram shows a ball bearing being measured using a micrometer screw gauge. What is the diameter of the ball bearing? A 2.25 mm B 2.52 mm C 2.75 mm D 3.25 mm www.KiasuExamPaper.com 72

3 4 A digital stopwatch to time the period of a simple pendulum. Two readings for 20 oscillations are as follows: 34.98 s and 35.70 s. What is the average period of the pendulum? A 0.28 s B 1.77 s C 3.53 s D 35.34 s 5 The speed-time graphs of car X and car Y are shown below. When will the two cars meet each other? A 3 s B 4 s C 5 s D 6 s 6 A wooden plank rests in equilibrium on two boulders on opposite sides of a narrow stream. Three forces of size P, Q and R act on the plank. Which shows the correct relationship for the three forces? A P + Q = R B P + R = Q C P = Q = R D P = Q + R 2 4 6 8 0 0 1 23 4 5 6 t / s v / m/s Car X Car Y www.KiasuExamPaper.com 73

4 7 A car of mass 800 kg is being driven along a level road. The engine supplies a forward force of 3600 N and the total resistive force is 2000 N. What is the acceleration of the car? A 2.0 m/s2 B 2.5 m/s2 C 4.5 m/s2 D 7.0 m/s2 8 Which of the following objects has the greatest inertia? A a stationary car of mass 800 kg B a 2 kg trolley traveling at 0.5 ms-1 C a ball of mass 200 g traveling at 4.0 ms-1 D a 50 kg athlete running the 100 m race in 10 s 9 A horizontal pole is attached to the side of a building as shown. There is a pivot P at the wall and a chain is connected from the end of the pole higher up the wall. There is a tension F in the chain. What is the moment of the force F about pivot P? A F x d B F x h C F x l D F x s l h s d chain F pole P www.KiasuExamPaper.com 74

5 10 A man pushes a box weighing 50 N across a floor. He exerts a fo rce of 80 N and the box moves 4.0 m in 5.0 seconds. What is the average power developed by the man? A 40 W B 64 W C 1 000 W D 1 600 W 11 In which states of matter is the force of attraction between the molecules the greatest and in which state is the speed of the molecules the greatest? greatest force of attraction greatest speed A B C D liquid liquid solid solid solid gas solid gas 12 Two metal blocks of the same mass and size, one at temperatures 150 0Ca n d the other at temperature 30 0C, are in good thermal contact. The two blocks are well insulated and there is no loss of thermal energy to the surrounding. block 1 block 2 Which of the following correctly describes the transfer of thermal energy between the blocks? A Thermal energy will be transferred from block 1 to block 2 until they both reach thermal equilibrium at 90 0C. B Thermal energy will be transferred from block 1 to block 2 until they both reach thermal equilibrium at 30 0C. C Thermal energy will be transferred from block 2 to block 1 until they both reach thermal equilibrium at 90 0C. D Thermal energy will be transferred from block 2 to block 1 until they both reach thermal equilibrium at 150 0C. 150 0C 30 0C www.KiasuExamPaper.com 75

6 13 Equal masses of two different liquids are heated using the same heater. The graph shows how the temperature of each liquid changes with time. What does the graph tell us about the liquids? A Liquid 1 starts to boil sooner than liquid 2. B Liquid 1 starts to melt sooner than liquid 2. C Liquid 1 has a higher boiling point than liquid 2. D Liquid 1 has a higher melting point than liquid 2. 14 An image is formed in a plane mirror. Which of the following is correct? angles distances A B C D w = y w = z x = y x = z dO = d1 dO = d1 dO is greater than d1 dO is greater than d1 www.KiasuExamPaper.com 76

7 15 The ray diagram below shows the formation of an image when a thin converging lens was used. If both the object and the image are 2 cm in height, what is the focal length of the lens? A 1 cm B 2 cm C 10 cm D 20 cm 16 A VHF radio station broadcasts at a frequency of 90 MHz (9.0 u 107 Hz). The speed of radio waves is 3.0 u 108 m/s. What is the wavelength of the waves broadcast by the station? A 0.30 m B 3.3 m C 27 m D 2.7 u 1016 m 17 Which of the following correctly describes the properties exhib ited by infrared, visible, ultraviolet and X-rays? A They are all transverse waves. B They are all visible to the naked eye. C They all travel at the same speed of 3.0 x 108 m/s in glass. D Their frequency change when they travel from one medium to another. 18 A voltmeter is connected across a resistor in an electrical circuit. What does the reading on the voltmeter measure? A the work done in driving 1 W of power through the resistor B the work done in driving 1 J of energy through the resistor C the work done in driving 1 A of current through the resistor D the work done in driving 1 C of charge through the resistor image object 2 cm 2 cm 40 cm www.KiasuExamPaper.com 77

8 19 What is the mistake in the household circuit shown below? A The fuses should be placed along the neutral wire. B The position of the earth wire in the socket is wrong. C The main switch should be installed along the live wire. D The neutral and the live wire in the socket should be interchanged. 20 The diagram shows a current-carrying wire in a magnetic field. Which arrow shows the direction of the force experienced by the wire? Lamp Socket www.KiasuExamPaper.com 78

1 BEDOK SOUTH SECONDARY SCHOOL PRELIMINARY EXAMINATION 2019 4E5N CANDIDATE NAME CLASS REGISTER NUMBER SCIENCE (PHYSICS, CHEMISTRY) Paper 2 Physics Candidates answer on the Question Paper. No Additional Materials are required. 5076/02 27 Aug 2019 1h1 5 m i n READ THESE INSTRUCTIONS FIRST Write your class, register number and name on the cover page. You may use a soft pencil for any diagrams, graphs or rough working. Write in dark blue or black ink. Do not use paper clips, highlighters, glue or correction fluid. The use of an approved scientific calculator is expected, where appropriate. You may lose marks if you do not show your working or do not use appropriate units. Section A [45 marks] Answer all questions. Write your answers in the spaces provided on the question paper. Section B [20 marks] Answer any two questions. Write your answers in the spaces provided on the question paper. At the end of the examination, fasten all your work securely together. The number of marks is given in brackets [ ] at the end of each question or part question. Setter: Mr Sean Goh For Examiner’s Use Section A 45 Section B 20 TOTAL 65 This document consists of 16 printed pages including the cove