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NDA 2 2025 GAT, question 74

Topic: Physics

Q74

The energy is always conserved for a system which is

  1. (a) isolated onlyCorrect answer
  2. (b) non-isolated only
  3. (c) both isolated and non-isolated
  4. (d) none of above

Solution.

Answer: (a) isolated only

  1. The total energy contained in an isolated system remains constant because no energy enters or leaves.
  2. A non-isolated system can gain or lose energy through transfers, although the conservation law still applies to the system plus its surroundings.