JEE Mains · Physics · STD 11 - 11. thermodynamics
A reversible heat engine converts one-fourth of the heat input into work. When the temperature of the sink is reduced by \(52\, K\), its efficiency is doubled. The temperature in Kelvin of the source will be ...... .
- A \(256\)
- B \(208\)
- C \(104\)
- D \(52\)
Answer & Solution
Correct Answer
(B) \(208\)
Step-by-step Solution
Detailed explanation
\(\eta=\frac{1}{4}=1-\frac{ T _{2}}{ T _{1}}\) \(\frac{ T _{2}}{ T _{1}}=\frac{3}{4}\) \(\frac{ T _{2}-52}{ T _{1}}=\frac{1}{2}\)
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