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

Options

A. It is impossible
B. It is possible but less probable
C. It is quite probable
D. Data is incomplete

Answer

A

Explanation

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