AP EAMCET · PHYSICS · Thermodynamics
In a Carnot engine, if the absolute temperature of the source is \(25 \%\) more than the absolute temperature of the sink, then the efficiency of the engine is
- A \(25 \%\)
- B \(50 \%\)
- C \(20 \%\)
- D \(40 \%\)
Answer & Solution
Correct Answer
(C) \(20 \%\)
Step-by-step Solution
Detailed explanation
\( T_H = T_C + 0.25 T_C = 1.25 T_C \) \( \eta = 1 - \frac{T_C}{T_H} = 1 - \frac{T_C}{1.25 T_C} = 1 - 0.8 = 0.2 \) \( \eta = 20 \\% \)
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