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Question 30411
JEE Physics · Medium

Work, Power and Energy: Energy Conservation MCQ

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Energy ConservationMediumQuestion 30411

Question

In the absence of non-conservative forces, the total mechanical energy (KE + PE):
  1. A
    Always increases
  2. B
    Always decreases
  3. C
    Remains constant
    Correct
  4. D
    Is always zero

Correct answer

Remains constant

Explanation

Conservation of mechanical energy: ΔKE + ΔPE = 0, so KE + PE = constant (when only conservative forces do work).

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