A scientist says that the efficiency of ...

A scientist says that the efficiency of his heat engine which operates at source temperature `127^(@)C` and sink temperature `27^(@)C` is `26%`, then

A

It is impossible

B

It is possible but less probable

C

It is quite probable

D

Data is incomplete

Verified by Experts

The correct Answer is:

A

`eta_("max")=1-(T_2)/(T_1)=1-(300)/(400)`
`implies eta_("max")=25%`, Hence 26% is impossible.

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