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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

`325^@C`

B

325K

C

`39^@C`

D

`320^@C`

Text Solution

Verified by Experts

The correct Answer is:
C
`beta=(T_2)/(T_1-T_2)=(-13+273)/(T_1-(-13+273))`
`implies 5=(260)/(T_1-260) implies 5T_1-5xx260=260`
`implies T_1=6/5xx260=312K`
`implies T_1=39^@C`
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