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The maximum effificiency of a heat engin...

The maximum effificiency of a heat engine operating between `125^(@)C` and `25^(@)C` is

A

`0.25`

B

`0.6`

C

`0.75`

D

`0.8`

Text Solution

Verified by Experts

The correct Answer is:
A
Efficiency of an engine is `eta=(T_(1)-T_(2))/(T_(1))`
`T_(1)=273 +125=398 K,`
`T_(2)=273 +25 =298 K`
`eta=(398-298)/(398)=(100)/(398)=0.25`
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DINESH PUBLICATION-IONIC EQUILIBRIUM -BRAIN TEASERS -4
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