Physics · Thermodynamics
The second law of thermodynamics implies that:
- 1the whole of the heat can be converted into mechanical energy.
- 2no heat engine can have 100% efficiency.✓
- 3all heat engines working in a reversible process can have 100% efficiency.
- 4a refrigerator can reduce the temperature to absolute zero.
Correct answer
no heat engine can have 100% efficiency.
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