Physics · Thermodynamics
Which of the following statements about thermodynamic processes and heat engines is/are correct? 1. Work done in irreversible expansion is greater than in quasi-static (reversible) expansion. 2. The efficiency of an ideal heat engine depends only on the reservoir temperatures. 3. Heat flows spontaneously from cold to hot only with the aid of external work.
- 11, 2 and 3
- 21 and 3 only
- 32 and 3 only✓
- 41 and 2 only
Correct answer
2 and 3 only
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