ACS 4NA Physics Paper 1

Anglo-Chinese School (Barker Road) PRELIMINARY EXAMINATION 2021 SECONDARY FOUR NORMAL ACADEMIC SCIENCE (PHYSICS) 5105 / 01 PAPER 1 AND PAPER 2: 1 HOUR 15 MINUTES INSTRUCTIONS TO CANDIDATES: Write in soft pencil. Write your name and exam index number on the Answer Sheet. There are twenty questions on this paper. Answer all questions. For each question there are four possible answers A, B, C or D. Choose the one you consider correct and record your choice in soft pencil on the separate Answer Sheet. INFORMATION FOR CANDIDATES: 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 question paper consists of 9 printed pages.

Anglo-Chinese School (Barker Road) Preliminary Examination 2018 Academic Science (Physics) 5105 2 Preliminary Examination 2021 Sec 4 Normal Academic Science (Physics) 5105 1 The diagram shows a vernier caliper used to measure the diameter of a cable. What is the reading shown? A 1.35 cm B 1.45 cm C 1.55 cm D 1.65 cm 2 Which row correctly shows the correct SI units for mass and temperature? mass temperature A gram degree Celsius B gram Kelvin C kilogram degree Celsius D kilogram Kelvin 3 Which length is the longest? A 0.02 Gm B 2 000 Mm C 20 000 000 km D 200 000 000 m

Anglo-Chinese School (Barker Road) Preliminary Examination 2018 Academic Science (Physics) 5105 3 Preliminary Examination 2021 Sec 4 Normal Academic Science (Physics) 5105 4 Which scenario takes the longest time? A A car accelerating at 7 m/s2 from 5 m/s to 25 m/s B A car accelerating at 15 m/s2 from 10 m/s to 45 m/s C A lorry decelerating at 6 m/s2 from 35 m/s to 20 m/s D A lorry decelerating at 12 m/s2 from 55 m/s to 15 m/s 5 The graph represents the motion of a lift. Which description of the motion of the lift is correct? A constant speed from B to C B decreasing deceleration from D to E C uniform acceleration from A to B D zero acceleration from C to D

Anglo-Chinese School (Barker Road) Preliminary Examination 2018 Academic Science (Physics) 5105 4 Preliminary Examination 2021 Sec 4 Normal Academic Science (Physics) 5105 6 The diagram shows the distance-time graph of a man walking. Which row describes the speed of the man? 0 s to 10 s 10 s to 20 s A constant constant B constant zero C decreasing zero D increasing constant 7 The diagram shows the two horizontal forces acting on a toy car. Which toy car will experience the smallest acceleration? mass of toy car / kg resistive force / N forward force / N A 4 10 19 B 5 16 24 C 6 21 30 D 7 23 41

Anglo-Chinese School (Barker Road) Preliminary Examination 2018 Academic Science (Physics) 5105 5 Preliminary Examination 2021 Sec 4 Normal Academic Science (Physics) 5105 8 The table shows the density of three substances. density / g/cm3 A 14 B 7 C 21 Which statement is correct? A 1 kg of A will occupy a larger volume than 1 kg of B. B 1 kg of B will have twice the weight of 1 kg of A. C 1 cm3 of B will have a smaller mass than 1 cm3 of C. D The density of all three liquids will decrease if brought from Earth to Moon. 9 A uniform bar is pivoted at its middle. Which force will balance the bar? A 4 N downward force acting 2 m to the right of the pivot. B 4 N upward force acting 3 m to the left of the pivot. C 5 N downward force acting 2 m to the right of the pivot. D 5 N upward force acting 3 m to the left of the pivot. 6 N 4 m 3 m 3 N

Anglo-Chinese School (Barker Road) Preliminary Examination 2018 Academic Science (Physics) 5105 6 Preliminary Examination 2021 Sec 4 Normal Academic Science (Physics) 5105 10 A student uses a stand and clamp to hold up a flask of liquid. Which diagram shows the most stable arrangement? 11 Which scenario gives the largest power developed? A A lift of mass 400 kg moving upwards by 80 m in 22 s. B A lift of mass 400 kg moving upwards by 140 m in 25 s. C A lift of mass 700 kg moving upwards by 100 m in 33 s. D A lift of mass 700 kg moving upwards by 160 m in 55 s. 12 Which row correctly describes the properties of liquids and solids? liquids solids A definite volume and definite shape definite volume but no definite shape B definite volume and no definite shape definite volume and definite shape C no definite volume but definite shape definite volume but no definite shape D no definite volume but definite shape no definite volume and no definite shape 13 Which row best describes the forces of attraction and the average speed of gas molecules? forces average speed of molecules A strong low B strong high C weak low D weak high A B C D

Anglo-Chinese School (Barker Road) Preliminary Examination 2018 Academic Science (Physics) 5105 7 Preliminary Examination 2021 Sec 4 Normal Academic Science (Physics) 5105 14 A solid substance is heated in a tube. The diagram shows how the temperature of the substance varies with time. At which point would the substance be a mixture of liquid and gas? 15 The diagrams show the arrangement of particles in a substance at two different temperatures. Which row correctly shows the melting and boiling point of the substance? melting point/ °C boiling point/ °C A 45 98 B 77 120 C 82 180 D 115 170 16 Which is a use of infra-red radiation? A intruder alarm B kill cancer cells C optical fibres D satellite television

Anglo-Chinese School (Barker Road) Preliminary Examination 2018 Academic Science (Physics) 5105 8 Preliminary Examination 2021 Sec 4 Normal Academic Science (Physics) 5105 17 A pulse of sound is produced at the bottom of a boat. The sound travels through the water and is reflected from a shoal of fish. The sound reaches the boat again after 1.2 s. The speed of sound in the water is 1500 m/ s. How far below the bottom of the boat is the shoal of fish? A 450 m B 900 m C 1800 m D 3600 m 18 An electrical source uses 8 kJ of energy to drive 400 C of charges around a complete circuit. What is the electromotive force? A 2 V B 20 V C 50 V D 3200 V

Anglo-Chinese School (Barker Road) Preliminary Examination 2018 Academic Science (Physics) 5105 9 Preliminary Examination 2021 Sec 4 Normal Academic Science (Physics) 5105 19 The diagram shows a circuit where three identical resistors are connected to a battery. Four voltmeters are connect