Generation of heat by friction is an example of a/an ________________ change?
Correct answer: B. Irreversible
- A. Isothermal
- B. Irreversible
- C. Adiabatic
- D. Reversible
Explanation
Friction converts organized mechanical energy into heat and generates entropy, so the process cannot be reversed without leaving changes in the surroundings. It is therefore irreversible, even if heat transfer is negligible.
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