A heat engine is working between the temperature -230 C and 2270 C. Calculate its efficiency
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a
50%
b
89.9%
c
110.1%
d
40%
answer is A.
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Detailed Solution
efficiency of heat engine is η=1−T2T1; T2=absolute temperature of sink;T1=absolute temperature of sourceη=1−273−23273+227=1−250500=12percentage efficiency is η=12×100=50%