EASY
8th ICSE
IMPORTANT
Earn 100

What is the SI unit of power?

25% studentsanswered this correctly

Important Questions on Energy

EASY
8th ICSE
IMPORTANT
The energy possessed by a moving train is in the form of _____ (potential energy/kinetic energy).
EASY
8th ICSE
IMPORTANT
The work done by the force of gravity on a child walking horizontally with a bag in his hand is _____(positive/zero).
EASY
8th ICSE
IMPORTANT
The kinetic energy of an object of mass 10 kg is _____(lesser/greater) than that of an object of mass 2 kg, if both are moving with the same velocity. 
EASY
8th ICSE
IMPORTANT
The potential energy of raindrops _____ (increases/decreases) when they fall down.
EASY
8th ICSE
IMPORTANT
Power is _____(smaller/greater) if more work is done in less interval of time.
MEDIUM
8th ICSE
IMPORTANT
Column A Column B
1. Work done a. sound energy
2. Simple pendulum b. capacity to do work
3. Coiled spring in a watch c. transformation of energy
4. Vibrating bodies d. force × displacement
5. Energy e. elastic potential energy
EASY
8th ICSE
IMPORTANT
Work is said to be done only if a force is applied on a body.
EASY
8th ICSE
IMPORTANT
If a car and a motorcycle are running at the same speed, then both will have the same kinetic energy.