AP EAMCET · PHYSICS · Thermodynamics
A Carnot heat engine has an efficiency of \(10 \%\). If the same engine is worked backward to obtain a refrigerator, then the coefficient of performance of the refrigerator is
- A 8
- B 9
- C 5
- D 6
Answer & Solution
Correct Answer
(B) 9
Step-by-step Solution
Detailed explanation
For heat engine, \(\eta_E=10 \%\) If same engine works as a refrigerator, then \((\mathrm{COP})_R=\frac{1-\eta}{\eta}=\frac{1-0.1}{0.1}=9\)
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