Physical Quantities and SI Unit MCQs with Answers PDF Download – Test 86

SI unit of length is

1. meter
2. kilogram
3. kilometer
4. None of the above

Most of the watches and wall clocks have precision of

1. Minutes
2. Hours
3. Seconds
4. Microseconds

Waves transfer energy from one point to the other.

1. It's true
2. Its false
3. its neutral
4. None of others

Specific heat capacity of a substance is equal to

1. the amount of heat required to raise the temperature of a 1 kg of a substance by 1 K
2. the amount of heat required to raise the temperature of a substance by 1 K
3. the amount of heat required to change the phase of a substance from solid to liquid without any change in temperature
4. the amount of heat required to change the phase of a substance from liquid to gas without any change in temperature

Heat absorbed or released by the same state of matter is represented by

1. Q = mcΔθ
2. Q = mc/Δθ
3. Q = m/cΔθ
4. Q = Δθ/mc