A refrigerator whose coefficient of performance is 5 extracts heat from the cooling compartment at the rate of 250 J per cycle. How mush electric energy is spend per cycle ? How much heat per cycle is discharged to the room ?

A refrigerator whose coefficient of performance is 5 extracts heat fro

1.	A refrigerator whose coefficient of performance is 5 extracts heat from the cooling compartment at the rate of 250 J per cycle. How mush electric energy is spend per cycle ? How much heat per cycle is discharged to the room ?
Answer» Solution :`beta = (Q_(2))/(W)` `:. W = (Q_(2))/(beta) = (250)/(5) = 50 J` `:.` Electric energy SPENT per cycle = 50 J Again, `Q_(1) = Q_(2) + W` or `Q_(1) = 250 + 50` or `Q_(1) = 300 J` `:.` HEAT energy discharged per cycle to room = 300 J