The coefficient of performance of a refrigerator, which extracts `100 calorie` of heat// cycle from the sink and releases `140 calorie` of heat//cycle to the source is

Write the expansion for coefficient of performance of a refrigerator in terms of heat released and heat absorbed.

The work done by 100 calorie of heat is:

If alpha is the coefficient of performance of a refrigerator and 'Q_(1)' is heat released to the hot reservoir, then the heat extracted from the cold reservoir 'Q_(2)' is

How much work can be done by 100 calories of heat?

How much work can be done by 100 calories of heat?

How much work can be done by 100 calories of heat?

The coefficient of absorption of heat surface of a body is 0.68. When 100 calories of heat is incident on the body, 27 calories are reflected from the surface. Find the coefficient of transmission of the body.

A Carnot engine takes 300 calories of heat from a source at 500 K and rejects 150 calories of heat to the sink. The temperature of the sink is

A refrigerator, whose coefficient of performance K is 5, extracts heat from the cooling compartment at the rate of 250 J per cycle. How much heat per cycle is discharged to the room which acts as the high temperature reservoir ?