Question 121
What is the standard SI unit of force?MechanicsMechanicseasy
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Question 122
A ray of light passes from air into water. What happens to the speed of light and the wavelength?WavesWavesmedium
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Question 123
What is the main advantage of using a transformer in an electric power transmission system?ElectricityElectricitymedium
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Question 124
Which form of heat transfer occurs primarily in solids?HeatHeateasy
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Question 125
A body of mass 2 kg is moving with a velocity of 3 m/s. What is its kinetic energy?EnergyEnergymedium
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Question 126
In magnetism, what is the region around a magnet where magnetic forces can be detected called?MagnetismMagnetismeasy
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Question 127
Which phenomenon provides evidence for the particle nature of light?Modern physicsModern physicshard
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Question 128
If a wave has a frequency of 500 Hz and a wavelength of 0.4 m, what is its speed?WavesWavesmedium
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Question 129
Which instrument is used to measure the frequency of a wave?WavesWaveseasy
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Question 130
What is the main reason for the increase in resistance of a conductor when its temperature increases?ElectricityElectricitymedium
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