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In an refrigerator, compressor motor is ...

In an refrigerator, compressor motor is of `1kW` power. Heat is transferred from `-3^(@)C` to `27^(@)C`. Whast amount of heat is coming out of the refrigerator per second assuming that efficiency of refrigerator is `50%` of a perfect engine ?

A

`5 kJ`

B

`6 kJ`

C

`19 kJ`

D

`20 kJ`

Text Solution

Verified by Experts

The correct Answer is:
D
In an refrigerator ………….
Efficiency of ideal engine
`eta = 1- (270)/(300) = (1)/(10)`
Efficiency of refrigerator `= (1)/(20)`
`(1)/(20) = (1kJ)/(Q) implies Q_(1) = 20 kJ`
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