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A scientist says that the efficiency of ...

A scientist says that the efficiency of heat engine which work 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 are incomplete.

Text Solution

Verified by Experts

The correct Answer is:
A
`eta=1-300/400=100/400`
`=1/4=1/4xx100`=25%
`therefore` Efficiency more than 25% is impossible for his heat engine.
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