The temperature of source and sink of a heat engine are `127^(@)C` and `27^(@)C` respectively. As inventor claims its efficiency to be `26%`, then,

Options

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

Answer

A

Explanation

Carnot engine is an ideal engine so its efficiency will be maximum
`therefore eta_"max"=(400-300)/400xx100%=25%`
therefore 26% efficient engine is impossible