AMKSS Prelim P1

[Turn Over Candidate Name Form Class Index Number ANG MO KIO SECONDARY SCHOOL PRELIMINARY EXAMINATION 2024 SECONDARY FOUR EXPRESS PHYSICS 6091(Revised)/01 Paper 1 28 August 2024 1 hour Setter: Mdm Jessica Lew Candidates answer on the OTAS Paper. Additional Materials: OTAS Paper READ THESE INSTRUCTIONS FIRST Write in soft pencil. Write your Name, Class and Index Number in the spaces provided. Do not use staples, paper clips, highlighters, glue or correction fluid/tape. 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 OTAS Read the instructions on the OTAS very carefully. Each correct answer will score one mark. No marks will be deducted for a wrong answer. Any rough working should be done in this booklet. The use of an approved scientific calculator is expected, where appropriate. This document consists of 17 pages and 1 blank page

2 AMKSS 4E PRELIM Exam 6091(Revised)/01/2024 1 Which diagram shows the magnitude and direction of the resultant R of the two forces F1 and F2? 2 Which instrument can be directly used to measure the circumference of a cup? A measuring tape B metre rule C caliper D digital micrometer 3 The graph represents the motion of a vehicle. What is the distance travelled by the vehicle in 35 s? A 250 m B 350 m C 450 m D 700 m

3 AMKSS 4E PRELIM Exam 6091(Revised)/01/2024 [Turn Over 4 An object falls towards the surface of the Earth. The object is falling at its terminal velocity. Which statement is correct? A There is air resistance and the acceleration of the object is negative. B There is air resistance and the acceleration of the object is zero. C There is no air resistance and the acceleration of the object is negative. D There is no air resistance and the acceleration of the object is zero. 5 A sphere P is made of steel and has a weight of 10 N on Earth. Another sphere Q is also made of steel and has a weight of 10 N on Mars. The gravitational field strength on Earth is greater than the gravitational field strength on Mars. Which statement is correct? A The mass of sphere P is the same as the mass of sphere Q. B The mass of sphere P is less than the mass of sphere Q. C On Mars, the weight of sphere P is more than 10 N. D On Earth, the weight of sphere Q is less than 10 N. 6 Which substance in the table has the lowest density? substance mass/g volume/cm 3 A nylon 1.2 1.0 B cotton 1.5 1.0 C olive oil 1.8 2.0 D water 2.0 2.0

4 AMKSS 4E PRELIM Exam 6091(Revised)/01/2024 7 A helium balloon is tied to a top-pan balance. A metal block of mass 100 g is placed on the balance. The reading on the balance is 91 g. Which statement can be deduced from this experiment? A The balloon exerts a downward force of 0.09 N on the top-pan balance. B The helium has a mass of -9 g. C The helium has a mass of +9 g D The resultant downward force on the top-pan balance is 0.91 N. 8 Which pair of forces is a pair of action-reaction forces? A Force exerted by a student pulling a rope and tension in the rope. B Thrust acting on a car and air resistance acting on the car. C Upward force acting on a plane and weight acting on the plane. D Gravitational force on a book and reaction force acting on the book.

5 AMKSS 4E PRELIM Exam 6091(Revised)/01/2024 [Turn Over 9 A uniform bridge of length 20 m and weight 100 kN is supported at each end by pillars as shown. The pillars exert forces T1 and T2 on the ends of the bridge. What are the values of T1 and T2 when a van of weight 24 kN is placed 5 m from the left- hand pillar of the bridge? T1/kN T2/kN A 56 68 B 62 62 C 68 56 D 74 50 10 A skier is pulled up a short straight slope at a constant speed by a rope. The tension in the rope is 100 N and there is a combined frictional and air resistance force of 20 N acting on the skier. The slope is 10 m long and the skier rises 1.5 m vertically. How much work is done by the rope to only pull the skier up the slope? A 120 J B 150 J C 1000 J D 1200 J

6 AMKSS 4E PRELIM Exam 6091(Revised)/01/2024 11 A car is moving along a straight horizontal road. The car has 1.6 MJ of energy in the kinetic store. The car accelerates for 20 s until the energy in the kinetic store of the car increases to 2.5 MJ. What is the minimum average power developed by the car engine for this acceleration? A 45 W B 205 W C 45 kW D 205 kW 12 A washbasin has an exit pipe covered with a plug of area 12 cm2. A chain is attached to the centre of the plug to assist in pulling the plug away from the exit hole. The washbasin contains water to a depth of 0.08 m. The density of the water is 1000 kg/m3. What is the force acting on the plug due to the water? A 0.96 N B 800 N C 9600 N D 80000 N

7 AMKSS 4E PRELIM Exam 6091(Revised)/01/2024 [Turn Over 13 A manometer is used to measure the pressure of a gas supply. Which change gives a greater value of height h? A using a less dense liquid B using a denser liquid C using a narrower tube D using a wider tube 14 Which statements about evaporation of water are correct? 1 Evaporation causes the remaining liquid to cool. 2 During evaporation, the more energetic particles escape from the surface of the liquid. 3 Evaporation only happens at 100 °C. A 1, 2 and 3 B 1 and 2 only C 1 and 3 only D 2 and 3 only 15 Hot gas inside a sealed cylinder is allowed to cool at room temperature. The volume of the cylinder remains constant as the piston remains in position. What is true about the gas particles as the temperature drops? speed of gas particles frequency of collision with piston A unchanged decreases B unchanged unchanged C decreases decreases D decreases unchanged

8 AMKSS 4E PRELIM Exam 6091(Revised)/01/2024 16 The diagram shows a wire gauze placed on a tripod. The gas from the Bunsen burner is turned on and lit from above the wire gauze. The flame is seen only above but not below the wire gauze. What is the reason for this observation? A There is no gas below the wire gauze. B Wire gauze is a good conductor of thermal energy. C Wire gauze is a poor conductor of thermal energy. D The wire gauze is not hot enough. 17 One end of a copper bar is heated to a high temperature. Which mechanism is responsible for the transfer of thermal energy to the other end of the copper bar? A The lattice vibrations of copper ions only. B The lattice vibrations of copper ions and movement of high energy electrons along the bar C The movement of high energy copper ions along the bar. D The movement of high energy electrons along the bar only. flame

9 AMKSS 4E PRELIM Exam 6091(Revised)/01/2024 [Turn Over 18 A block of ice is at a temperature of -100 °C. Energy is supplied at a constant rate. The graph shows how its temperature changes. At which points have the ice completely changed its state to water and all the water has completely changed state to steam? completely changed to liquid water completely changed to steam A 1 3 B 1 4 C 2 3 D 2 4 19 A block of copper with a mass of 0.5 kg is placed in boiling water at 100 °C for 10 minutes. The block is then transferred into a Styrofoam box with 1.0 kg of water at a temperature of 30 °C. The specific heat capacity of copper is 400 J/(kg°C) and the specific heat capacity of water is 4200 J/(kg°C). What is the final temperature of the copper and water mixture? A 33.2 °C B 36.5 °C C 52.6 °C D 70.0 °C 20 Visible light has wavelengths in the range of 400 nm to 700 nm. What is the range of the frequencies of vi