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An ideal refrigerator has a freezer at a...

An ideal refrigerator has a freezer at a temperature of `-13^(@)C`. The coefficient of performance of the engine is `5`. The temperature of the air (to which heat is rejected) will be

A

320 K

B

`39^(@)C`

C

39 K

D

`325^(@)C`

Text Solution

Verified by Experts

The correct Answer is:
B
For the refrigerator, `K=T_(2)/(T_(1)-T_(2))`
`therefore5=((273-13))/(T_(1)-(273-13))=260/(T_(1)-260)`
`therefore5T_(1)-1300=260`
`therefore5T_(1)=1560" "thereforeT_(1)=312K=39^(@)C`
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