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Question Practice

Which of the following statements best describes the law of conservation of mechanical energy?

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MCQ_SA
CBSE
Class 11
Physics
Physics Part - I
WORK, ENERGY AND POWER
Question Bank

Which of the following stateme...

Single Answer MCQ
Q-00057368

Which of the following statements best describes the law of conservation of mechanical energy?

1

Mechanical energy is always conserved if only conservative forces act.

2

Mechanical energy decreases if work is done against friction.

3

Potential energy is always greater than kinetic energy.

4

Energy can be created from nothing.

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