Nuclear fusion, like nuclear fission ?

C. Neither releases nor absorbs energy

D. Absorbs energy but does not release it

Everyday Science · Physics in Everyday Life · page 21 of 21

Work & Energy MCQs with Answers

Includes 12 past paper MCQs (marked).

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8 MCQs with answers and a short one-liner. Hide answers to test yourself.

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201.
Work done is equal to ?
Correct Answer: C. Effort × distance
One-liner
Work done is equal to effort (force) × distance moved in the direction of the force.
202.
Work done per unit time is called ?
Correct Answer: B. Power
One-liner
Work done per unit time is called Power.
203.
The particle of mass m has momentum P, then its kinetic energy will be?
Correct Answer: A. P²/2m
One-liner
The kinetic energy of a particle in terms of momentum is P²/2m.
204.
Which one of the following is not a form of energy?
Correct Answer: C. Lamp
One-liner
A lamp is not a form of energy; it is a device that converts electrical energy into light and heat energy.
205.
A block of mass 2 kg moving with velocity 5 m/s. Its kinetic energy is:
Correct Answer: C. 25 J
One-liner
Kinetic energy = ½mv² = ½ × 2 × (5)² = 25 J.
206.
Nuclear fusion, like nuclear fission ?
Correct Answer: A. Is exoergic
One-liner
Nuclear fusion, like nuclear fission, is exoergic — meaning both processes release energy.
207.
Fossil fuel is regarded as an energy resource which is ?
Correct Answer: C. Non-renewable
One-liner
Fossil fuel is regarded as an energy resource which is non-renewable.
208.
The dimension of power is _?
Correct Answer: A. [ML²T⁻³]
One-liner
The dimension of power is [ML²T⁻³] because power is work done per unit time.