A carnot engine operating between temperature T1 and T2 has the efficiency of 16. When the temperature T2 is lowered by 62K, it efficiency becomes 13, Then temperature T1 and T2 respectively are
A
T1=370K,T2=330K
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B
T1=330K,T2=268K
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C
T1=310K,T2=248K
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D
T1=372K,T2=310K
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Solution
The correct option is DT1=372K,T2=310K The efficiency of the Carnot engine is defined as, η=1−T2T1 We have, 16=1−T2T1 and on decreasing the temperature by 62K the efficiency (η) becomes, 13=1−T2−62T1 Solving these two equations, we have T1=372K,T2=310K