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A Carnot engine takes 3xx10^6cal. of hea...

A Carnot engine takes `3xx10^6cal`. of heat from a reservoir at `62^@C`, and gives it to a sink at `27^@C`. The work done by the engine is

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The correct Answer is:
A, B, C
`T_1=627+273=900K`
`T_2=27+273=300K`
`Q_1=3xx10^6cal`
`eta=(1-(T_2)/(T_1))=(1-Q_2/Q_1)`
`:.` `Q_2/Q_1=T_2/T_1`
`Q_2=T_2/T_1xxQ_1`
`(3xx10^6xx300)/(900)=10^6cal`
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