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A carnot's engine works between a source...

A carnot's engine works between a source at a temperature of `27^(@)C` and a sink at `-123 ^(@)C`. Its efficiency is

A

0.5

B

0.25

C

0.75

D

0.4

Text Solution

Verified by Experts

The correct Answer is:
A
`T_(1)=300 K`
`T_(2)=150 K`
`eta=1-(T_(2))/(T_(1))=0.5`
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