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  • An ideal heat engine working between temperature T1 and T2 has an efficiency , the new

An ideal heat engine working between temperature T1 and T2 has an efficiency \eta, the new efficiency if both the source and sink temperature is doubled, will be 

Option: 1

\frac{\eta}{2}


Option: 2

\eta


Option: 3

2 \eta


Option: 4

1.5 \eta


Answers (1)

best_answer

 

 

 

\\ \text { In first case } \eta_{1}=\frac{T_{1}-T_{2}}{T_{1}} \quad \text { In second case } \eta_{2}=\frac{2 T_{1}-2 T_{2}}{2 T_{1}}=\frac{T_{1}-T_{2}}{T_{1}}=\eta

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Pankaj

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