2024 SNGS Physics Prelim P1 QP

Name: _________________________ ( ) Class: _____________ PRELIMINARY EXAMINATION GENERAL CERTIFICATE OF EDUCATION ORDINARY LEVEL PHYSICS 6091/01 Paper 1 Multiple Choice 27 August 2024 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 separate 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 18 printed pages. [Turn over

2 2024 SNGS Sec 4 Physics Prelim P1 1 In a test, four students linked the quantities on the left with their units on the right. Which student matched them all correctly? 2 An object travels for 20 s with a constant speed of 10 m/s. For the next 10 s, it accelerates uniformly to 20 m/s. What is the average speed of the object during the last 15 s of its motion? A 11.7 m/s B 12.5 m/s C 13.3 m/s D 15.0 m/s

3 2024 SNGS Sec 4 Physics Prelim P1 [Turn over 3 What happens to an object if it is moved from a location above sea level to the top of a very tall mountain? A Its density increases. B Its mass increases. C Its weight decreases. D Its volume decreases. 4 An electric car of mass 1500 kg has a forward acceleration of 4.5 m/s2. A resistive force of 2000 N opposes the motion of the car. What is the driving force due to the engine of the car? A 1500 N B 2000 N C 6800 N D 8800 N 5 Four beams of the same length each have three forces acting on them. Which beam has both zero resultant force and zero resultant moment?

4 2024 SNGS Sec 4 Physics Prelim P1 6 The diagrams show the cross -sections of different glasses. All the glasses are filled to the top with a liquid of similar density to glass. P Q R S Which row shows the glasses in order of decreasing stability? A Q → P → R → S B Q → R → P → S C S → P → R → Q D S → R → P → Q 7 The tyres of a racing car each have an area of 350 cm2 in contact with the ground. The car has a mass of 840 kg and its weight is assumed to be equally distributed amongst the four tyres. The gravitational field strength is 10 N/kg. What is the pressure exerted on the ground? A 6.0 N / cm2 B 24 N / cm2 C 60 N / cm2 D 240 N / cm2 8 A metal cube has a mass of 1200 g and sides 4.00 cm each. There is a hole measuring 2.00 cm  2.00 cm  1.00 cm at the top. What is the density of the metal used to make the block? A 17.6 g/cm3 B 18.8 g/cm3 C 20.0 g/cm3 D 21.4 g/cm3

5 2024 SNGS Sec 4 Physics Prelim P1 [Turn over 9 An underwater diver moves from the ocean to a fresh water lake. The density of water in the lake is less than in the ocean. In which position does the diver experience the smallest pressure due to the water? 10 The table shows some data from a high-jump competition. Which athlete jumps the highest? weight / N increase in energy of gravitational potential store / J A B C D 650 760 870 980 1410 1730 1860 1900 11 A small ball bearing is released from the top of a tall cylinder filled with water. After some time, it is observed to fall with constant speed until it reaches the bottom of the cylinder. What is the main energy transfer taking place as it falls with constant speed? A kinetic store of ball to internal store of water molecules B kinetic store of ball to gravitational potential store of ball C gravitational potential store of ball to kinetic store of ball D gravitational potential store of ball to internal store of water molecules

6 2024 SNGS Sec 4 Physics Prelim P1 12 Which row best describes the behaviour of molecules in a liquid? distance between the molecules motion of the molecules strength of forces between the molecules A B C D close together close together far apart far apart stationary random stationary random very strong fairly strong fairly strong weak 13 A gas is in a sealed container of constant volume. The gas is heated and the pressure of the gas on the walls of the container increases. How do the particles of the gas cause this increase in pressure? A They expand. B They hit each other more frequently. C They hit the container more frequently. D They vibrate faster. 14 Which statement about the transfer of thermal energy is correct? A Transfer by radiation does not require a medium. B Transfer in solids is by means of density changes in the material. C Transfer is from a region of lower temperature to one of higher temperature. D Transfer upwards in fluids is mainly through the vibrations of neighbouring particles.

7 2024 SNGS Sec 4 Physics Prelim P1 [Turn over 15 Air in a closed container contains smoke illuminated by bright light. When viewed through a microscope, bright specks of light are seen moving at random. Which statement is correct? A The random motion of the specks is faster in a vacuum. B The specks move faster when the air is at a higher temperature. C The specks seen are molecules of air in rapid random motion. D When light is turned off, the specks slow down and stop moving. 16 The diagram shows the changes of state of a substance. What are the names of the changes of state P, Q, R and S? P Q R S A B C D condensation condensation boiling boiling melting solidification melting solidification solidification melting solidification melting boiling boiling condensation condensation 17 When a liquid evaporates, molecules escape from its surface. Which molecules escape, and what happens to the average kinetic energy of the molecules remaining in the liquid? molecules that escape average kinetic energy of remaining molecules A B C D less energetic less energetic more energetic more energetic decrease increase decrease increase

8 2024 SNGS Sec 4 Physics Prelim P1 18 A 0.30 kW heater is used to heat a well -insulated 3.0 kg mass of copper for 5 minutes. The temperature rises by 75 oC. What is the specific heat capacity of copper? A 0.0067 J/(kg oC) B 0.40 J/(kg oC) C 6.7 J/(kg oC) D 400 J/(kg oC) 19 The diagram shows the change in direction of water waves as they cross a boundary in a ripple tank. What causes this change in direction? A a change in depth causing a change in frequency B a change in depth causing a change in speed C a change in frequency causing a change in speed D a change in wavelength causing a change in frequency

9 2024 SNGS Sec 4 Physics Prelim P1 [Turn over 20 The diagram shows a loudspeaker that is producing a continuous sound wave of frequency 200 Hz in air. Which diagram best shows how the sound wave causes a molecule at P to move in an interval of 5.0 ms? 21 The graph shows, at one instant, the pressure variation along a sound wave. Which point on the diagram represents a rarefaction and what is the wavelength of the sound wave? rarefaction at wavelength is A B C D P P Q Q X Y X Y

10 2024 SNGS Sec 4 Physics Prelim P1 22 A loudspeaker and a microphone are placed side by side in front of a wall. The loudspeaker makes a sound which is detected by the microphone. The microphone is connected to a device known as an oscilloscope which is set so that each horizontal division on its screen represents a d