2022 RSS Phy Prelims P1

1 Riverside Secondary School 6091/01/4E/PRELIM/2022 [Turn over RIVERSIDE SECONDARY SCHOOL SUBJECT : Physics SUBJECT CODE & PAPER : 6091/01 LEVEL/STREAM : 4 Express DURATION : 1 hour READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name and index number on the Answer Sheet in the spaces provided. There are forty questions in 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. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this question paper. The use of an appropriate scientific calculator is expected, where appropriate. _______________________________________________________________________ This question paper consists of 20 printed pages. 1 Which of the following can the time 12 h 15 min be written as? 3 cm NAME: NO: CLASS: PRELIMINARY EXAMINATION 2022

2 Riverside Secondary School 6091/01/4E/PRELIM/2022 [Turn over A 12.15 h B 7.35 x 102 min C 45.1 ks D 10 800 s 2 The diagram shows four target boards used in a shooting competition. Which one indicates a small random error but large systematic error? key bullet hole A B C D

3 Riverside Secondary School 6091/01/4E/PRELIM/2022 [Turn over 3 Vernier calipers are used to measure the thickness of a notebook. Diagram 1 shows the caliper reading when the jaws are closed. Diagram 2 shows the caliper reading when the notebook is between the jaws. diagram 1 diagram 2 What is the thickness of the notebook? A 3.15 cm B 3.23 cm C 3.25 cm D 3.34 cm 4 A stone falling through the air has reached terminal velocity. Which row shows the acceleration and the velocity of the stone? acceleration of the stone velocity of the stone A zero constant B 10 m/s2 constant C zero increasing D 10 m/s2 increasing 5 A bus travels north at a velocity of 25 m/s along a straight, horizontal track. At time t = 5.0 s, its velocity starts to change and its acceleration is -2.0 m/s2. How is the bus moving at time t = 15.0 s? A travelling south with decreasing speed B travelling south with increasing speed C travelling north with decreasing speed

4 Riverside Secondary School 6091/01/4E/PRELIM/2022 [Turn over D travelling north with increasing speed 6 In which situation is the resultant force on the moving body equal to zero? A a rock falling freely on the Moon B a car turning a corner at constant speed C a train going up a hill along a straight path at constant speed D a bicycle decelerating along a straight horizontal track 7 A rectangular board can be hung on the wall in three different ways as shown in the diagrams below. The tensions in the strings are indicated as T1, T2 and T3 accordingly. Which of the following statements is correct? A T1 > T2 > T3 B T1 = T2, and T2 < T3 C the resultant force due to T3 is the largest among the three ways D the resultant force of the tensions in all the three ways are the same 8 Two objects each of mass 25 g and having the same density of 3.5 g/cm3 are carefully lowered into a measuring cylinder containing 65 cm3 of water. What is the final reading on the measuring cylinder? A 14 cm3 B 72 cm3 C 79 cm3 D 240 cm3 T1 T1 T2 T2 T3 T3

5 Riverside Secondary School 6091/01/4E/PRELIM/2022 [Turn over 9 The diagram shows a beam. Without any weights, the beam balances at its centre. Three weights are hung as shown. At which point does a load of 4.0 N balance the beam? 10 A square shop sign of side 1.0 m made from a uniform flat lamina PQRS is attached to a vertical wall by a hinge at P so that S rests against the wall vertically below P. The mass of the sign is 5.0 kg. What is the normal reaction exerted by the wall at S? A 25 N B 50 N C 75 N D 100 N A B C D 4.0 N4.0 N5.0 N P Q S R 1.0 m 1.0 m normal reaction hinge

6 Riverside Secondary School 6091/01/4E/PRELIM/2022 [Turn over 11 A tall container which is open to the atmosphere contains a layer of liquid L, floating on liquid M. Liquid M has a density which is two times greater than that of liquid L. Which graph shows how the pressure p, at a point varies with its height h, above the base of the container? p h p h p h p h A B C D h liquid L liquid M

7 Riverside Secondary School 6091/01/4E/PRELIM/2022 [Turn over 12 A hydraulic jack is used to lift a load of mass 1250 kg by applying a force F to piston P. The cross-sectional area of piston P is 100 cm2 and the cross-sectional area of piston Q is 500 cm2. The gravitational field strength g is 10 N/kg. What is the value of the force F? A 250 N B 2500 N C 6250 N D 62 500 N 13 An object is initially at rest. The object is dropped from a 50 m high tower. Air resistance can be ignored. Assume that the gravitational potential energy of the object is zero when it is on the ground. What is the ratio of the kinetic energy of the object to its gravitational potential energy at a height of 10 m from the ground? A 5 : 4 B 2 : 1 C 4 : 1 D 5 : 1 load piston P piston Q hydraulic fluid F

8 Riverside Secondary School 6091/01/4E/PRELIM/2022 [Turn over 14 An electric motor is used to lift a 6.0 N load through 3.0 m, as shown in the diagram. The total amount of electrical energy used by the motor is 28 J. How much energy is wasted? A 9.3 J B 10 J C 14 J D 26 J 15 Which row explains why a liquid has a fixed volume but does not have a fixed shape? force between molecules in the liquid movement of molecules in the liquid A large move throughout the liquid B large vibrate at fixed positions C small move throughout the liquid D small vibrate at fixed positions motor 3.0 m 6.0 N load

9 Riverside Secondary School 6091/01/4E/PRELIM/2022 [Turn over 16 Container A and container B are filled with equal amounts of hot water and the temperature of the water in the containers are measured with a thermometer some time later. It is observed that container A has a much lower temperature than container B. What are the possible reasons? 1 Container A is black and container B is silver. 2 Container A has a lid and container B is not covered. 3 Container A is made of steel and container B is made of wood. A 1 and 2 only B 1 and 3 only C 2 and 3 only D 1, 2 and 3 17 A girl measures the resistance of a metal wire at the ice point and the steam point. She records her results. temperature resistance / Ω ice point 15.0 steam point 20.0 What is the temperature when the resistance of the wire is 14.0 Ω? A -20 ºC B -17 ºC C 17 ºC D 20 ºC 18 A new liquid is tested to decide whether it is suitable for use in a liquid-in-glass thermometer. It is found that the liquid does not expand uniformly with temperature. What will be the effect of this on the scale of the thermometer if this liquid is used?

10 Riverside Secondary School 6091/01/4E/PRELIM/2022 [Turn over A The markings will be spaced unevenly. B The markings will be too far apart. C It will have a short range. D The markings will be too close together. 19 Two blocks, X and Y, are made of the same metal. They are heated by heaters of the same power rating. The graph shows the variation of the temperature with time. What is the ratio of the mass of X to that of Y? A 0.33 B 0.25 C 0.75 D 3.0 20 In the experiment shown, the amount of electrical energy used to melt some ice is measured using a joule meter. temperature / ºC time / min 80 60 40 20 0 X Y joule meter electricity supply melting ice immersion heater 50