Efficiency of a heat engine working between a given source and sink is 0.5 . Coefficient of performance of the refrigerator working between the same source and the sink will be

If the efficiency of a carnot engine is eta ,then the coefficient of performance of a heat pump working between the same temperatures will be

If the efficiency of a carnot engine is eta ,then the coefficient of performance of a heat pump working between the same temperatures will be

A carnot engine works between constant temps. T_1 and T_2 of source and sink resp. For efficiency to be greatest

A heat engine works between source and sink temperatures 150°C and 30°C respectively.The efficiency of heat engine may be

A heat engine works between source and sink temperatures 150°C and 30°C respectively.The efficiency of heat engine may be

An ideal heat engine working between temperature T_(1) and T_(2) has an efficiency eta , the new efficiency if both the source and sink temperature are doubled, will be

An ideal heat engine working between temperature T_1 and T_2 has an efficiency eta . The new efficiency if both the source and sink temperature are doubled, will be

An ideal heat engine working between temperature T_(1) and T_(2) has an efficiency eta , the new efficiency if both the source and sink temperature are doubled, will be

The efficiency of a carnot heat engine is 0.6 when the absolute temperatures of the source and sink are T_(1) and T_(2) respectively. The efficiency of another carnot engine is also 0.6 but the source and sink temperatures are different. What are the temperatures of the source and the sink of the other engine ?

A heat engine works between a source and a sink maintaned at constant temperatures T_(1) and T_(2) . For the efficiency to be greatest