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An Ideal refrigerator has a freezer ...

An Ideal refrigerator has a freezer at temperature `-12^(@)C` . The coefficient of performance of the engine is 5. The temperature of the air (to which the heat ejected ) is

A

`50^(@)C`

B

`45.2^(@)C`

C

`40.2^(@)C`

D

`37.5^(@)C`

Text Solution

Verified by Experts

The correct Answer is:
C
COP`(beta)=(T_(L))/(T_(H)-T_(L))=(-12^(@))/(T_(H)+12^(@))`
`5=(261)/(T_(H)+285)rArr" "T_(H)=-232.8K=40.2^(@)C`
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