2022 SNGS Physics Prelim P1 QN PAPER

1 2022 SNGS Sec 4 Physics Prelim P1 Name: _________________________ ( ) Class: _____________ PRELIMINARY EXAMINATION GENERAL CERTIFICATE OF EDUCATION ORDINARY LEVEL PHYSICS 6091/01 Paper 1 Multiple Choice 30 August 2022 1 hour Additional Materials: Multiple Choice Answer Sheet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name, index number and class on the Answer Sheet in the spaces provided. 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 s eparate Answer Sheet. Read 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 on this booklet. The use of an approved scientific calculator is expected, where appropriate. This document consists of 17 printed pages and 1 blank page. [Turn over

2 2022 SNGS Sec 4 Physics Prelim P1 1 Which of the following has the same value as 5.0 × 107 m? A 5.0 × 108 nm B 5.0 × 10-4 mm C 5.0 × 103 cm D 5.0 × 10-1 m 2 A micrometer screw gauge is used to measure the thickness of a sheet of glass. Diagram 1 shows the reading on the micrometer when the jaws are closed with nothing between the jaws. Diagram 2 shows the reading on the micrometer when the jaws are closed around the glass sheet. What is the thickness of the glass sheet? A 2.10 mm B 2.35 mm C 2.60 mm D 2.85 mm 3 A heavy rack is suspended from a ceiling by a rope. The sack is then pulled to one side and held stationary. Which vector diagram shows the resultant force R of the pulling force and tension? A B C D 20 25 15 30 35 25 diagram 1 diagram 2 R R R R

3 2022 SNGS Sec 4 Physics Prelim P1 4 A block of wood of mass 2.0 kg is pushed along the horizontal flat surface of a bench with a force of 4.0 N. It moves at constant speed. When the pushing force is increased to 12 N, what is the acceleration of the block? A 0 m/s2 B 4.0 m/s2 C 6.0 m/s2 D 8.0 m/s2 5 The graph shows the total resistive force that acts on a car of mass 830 kg over a period of time. The car is at rest at t = 0 s. A constant driving force of 2500 N acts on the car from t = 2 s to t = 24 s. Which statement is incorrect? A The acceleration of the car is 3.0 m/s2 at t = 2 s. B The acceleration of the car is zero after t = 16 s. C The car is stationary from t = 0 s to t = 2 s. D The resultant force acting on the car increases from t = 2 s to t = 16 s. 6 Which of the following correctly describes an action-reaction pair of forces? A The backward force acting on water by propeller and the resistive force acting on the boat. B The reaction force on a book resting on a table and the weight of the book. C A runner pushes backward on the ground and the ground pushes forwards on runner. D The pulling force acting on a trolley and the frictional force acting on the trolley.

4 2022 SNGS Sec 4 Physics Prelim P1 7 A rocket is travelling vertically upwards. Three vertical forces act on it. The thrust acts upwards and is equal to 100 000 N. The weight of the rocket is equal to 80 000 N. What is the magnitude and direction of the drag force acting on the rocket when it is travelling upwards at constant speed? magnitude direction A 20 000 N downwards B 20 000 N upwards C 160 000 N downwards D 160 000 N upwards 8 Two stones of different masses fall from rest at the same time from a table. Air resistance is ignored. What will happen and why? What will happen why A Both stones hit the floor at the same time. The acceleration is constant. B Both stones hit the floor at the same time. The speed is constant. C The heavier stone hits the floor first. Acceleration increases with weight D The heavier stone hits the floor first. Speed increases with weight 9 A rock has a weight of 19 N on Mars. The rock is then taken back to Earth. The gravitational field strength of Mars is 3.7 N/kg and the gravitational field strength of Earth is 9.8 N/kg. The mass is unchanged when transported. What is the mass and weight of the rock on Earth? mass on Earth / kg weight on Earth / N A 1.9 50 B 1.9 19 C 5.1 19 D 5.1 50

5 2022 SNGS Sec 4 Physics Prelim P1 10 A uniform metre rule is supported by vertical wires P and Q and remains horizontal as shown in diagram 1. The tension in each wire is 1 N. When a weight of 4 N is hung from the metre rule at the position as shown in diagram 2, the tension in Q becomes 2.3 N while the metre rule remains horizontal. What is the distance d of the weight 4 N from end P? A 32.5 cm B 57.5 cm C 67.5 cm D Cannot be found as tension in P is unknown 11 An electric motor is used to lift a 5 N load through 3 m as shown. The amount of energy wasted is 10 J. What is the efficiency of the motor? A 15 % B 40 % C 60 % D 67 % P P Q Q 1 N 1 N 2.3 N 1.0 m d 4 N diagram 1 diagram 2

6 2022 SNGS Sec 4 Physics Prelim P1 12 Some students climb a flight of stairs in school, and each student is timed. Their weights and times are recorded in the table. Which student develops the most power? weight/ N time/s A 400 10 B 450 12 C 490 15 D 540 16 13 In an experiment, smoke particles are suspended in air and viewed through a microscope. The smoke particles undergo jerky random motion. Which statement is correct? A Air particles have large mass compared to smoke particles and they move in one direction only. B Air particles have large mass compared to smoke particles and they move in random directions. C Air particles move at high speed compared to smoke particle s and they move in one direction only. D Air particles move at high speed compared to smoke particle and they move in random directions. 14 Which row shows physical properties that may both be used to define temperature scales? A e.m.f at the junction of two different metals and volume of a liquid column B mass of a solid object and resistance of a metal wire C mass of a solid object and volume of a liquid column D volume of a liquid column and weight of trapped gas

7 2022 SNGS Sec 4 Physics Prelim P1 15 A student measures the resistance of a metal wire at the ice point and steam point. She records the results. temperature resistance /  ice point 15.0 steam point 20.0 What is the temperature when the resistance of the wire is 22.0 ? A 40 C B 60 C C 120 C D 140 C 16 Which process(es) of thermal energy transfer require a medium? A conduction and convection B conduction only C convection and radiation D radiation only 17 A student is comparing the design of a refrigerator and an oven. The cooling unit of the refrigerator and the heater of an oven can be fitted either at the top or at the bottom. Which row shows the best position for the cooling unit and heater? cooling unit heater A bottom bottom B bottom top C top bottom D top top

8 2022 SNGS Sec 4 Physics Prelim P1 18 A hot metal plate is placed near to a cold metal plate. Which row shows the colour for the hot plate and for cold plate that causes the temperature of cold plate to increase most slowly? hot plate cold plate A dull black dull black B dull black shiny white C shiny white dull black D shiny white shiny white 19 The diagram represents a rope wave.