A reversible engine converts one-sixth of the heat input into work. When the temperature of the sink is reduced by 62∘C, the efficiency of the and sink are
A
80∘C,37∘C
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B
95∘C,28∘C
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C
90∘C,37∘C
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D
99∘C,37∘C
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Solution
The correct option is D99∘C,37∘C The correct answer is option(D).
WE know,
Efficiency,
η=(T2–T1)T2=16⟹6T2−6T1=T2⟹T2=1.2T1.......(i)
Where T2 is the source temperature and T1 is the sink temperature.
If the sink temperature is reduced by 62°C, the efficiency gets doubled i.e.