AP EAMCET · PHYSICS · Thermodynamics
The efficiency of a Carnot's engine is \(100 \%\) only when
- A ideal gas is used as a working substance
- B temperature of the sink is equal to absolute zero
- C source temperature is equal to the temperature of the sink
- D source temperature is equal to absolute zero
Answer & Solution
Correct Answer
(B) temperature of the sink is equal to absolute zero
Step-by-step Solution
Detailed explanation
The efficiency of Carnot's engine is given as \(\eta=1-\frac{T_2}{T_1}\) ...(i) where, \(T_1=\) temperature of source and \(T_2=\) temperature of sink. For \(100 \%\) efficiency, \(\eta=1\) \(\therefore\) From Eq. (i), we get…
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