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| Q.4 | Which of the laws in Thermodynamics gives a fundamental limitation to the efficiency of a heat engine and the co-efficient of performance of a refrigerator? | |
| Ans | 1. Third law of thermodynamics | |
| 2. Zeroth Law of Thermodynamics | ||
| 3. First law of thermodynamics | ||
| 4. Second law of thermodynamics |
Correct Ans: 4
