A carnot engine absorbs `1000J` of heat energy from a reservoir at `127^(@)C` and rejecs `600J` of heat energy during each cycle. Calculate (i) efficiency of the engine, (ii) temperature of sink, (iii) amount of useful work done per cycle.A. 20% and `-43^(@)C`B. 40% and `-33^(@)C`C. 50% and `-20^(@)C`D. 70% and `-10^(@)C`

A carnot engine absorbs `1000J` of heat energy from a reservoir at `12

1.	A carnot engine absorbs `1000J` of heat energy from a reservoir at `127^(@)C` and rejecs `600J` of heat energy during each cycle. Calculate (i) efficiency of the engine, (ii) temperature of sink, (iii) amount of useful work done per cycle.A. 20% and `-43^(@)C`B. 40% and `-33^(@)C`C. 50% and `-20^(@)C`D. 70% and `-10^(@)C`
Answer» Correct Answer - B `eta=1-(Q_(2))/(Q_(1))=1-(T_("sin k"))/(T_("source"))`

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