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A carnot engine operates with source at ...

A carnot engine operates with source at `127^(@)C` and sink at `27^(@)C`. If the source supplies `40kJ` of heat energy. The work done by the engine is

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The correct Answer is:
A
`Q_(1)=40kJ" "because eta=1-(T_(2))/(T_(1))=(W)/(Q_(1))`
`implies W=Q_(1)[1-(T_(2))/(T_(1))]=40kJ[1-(300)/(400)]=10kJ`
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