Question 21
Which process involves the transfer of heat energy by the movement of fluids?HeatHeateasy
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Question 22
A wave has a frequency of 50 Hz and a wavelength of 6 m. What is the speed of the wave?WavesWavesmedium
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Question 23
Which component is used to oppose current flow in an electrical circuit?ElectricityElectricityeasy
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Question 24
A bar magnet is moved towards a coil of wire connected to a galvanometer. What will the galvanometer show?MagnetismMagnetismmedium
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Question 25
Which of the following units is used to measure electric charge?ElectricityElectricityeasy
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Question 26
In an experiment, a student uses a pendulum to measure gravitational acceleration. Which factor should the student vary to determine g?MechanicsMechanicshard
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Question 27
Which instrument is most suitable for measuring the mass of a small object in a school laboratory?MeasurementsMeasurements and Unitseasy
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Question 28
A car accelerates uniformly from rest to a velocity of 20 m/s in 5 seconds. What is its acceleration?MechanicsMotion and Forceseasy
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Question 29
What type of energy transformation occurs when a battery powers a bulb?EnergyEnergy Transformationsmedium
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Question 30
Which of the following is a property of heat?HeatHeat and Temperatureeasy
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