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If the coefficient of performance of a r...

If the coefficient of performance of a refrigerator is 5 and operates at the room temperature (`27^(@)` C), find the temperature inside the refrigerator.

A

240 K

B

250 K

C

230 K

D

260 K

Text Solution

Verified by Experts

The correct Answer is:
B
Here coefficient of performance `beta`=5
`t_(1)=27^(@)C=(27+273)K=300K`
As `beta =(T_(2))/(T_(1)-T_(2)), rArr 5 =(T_(2))/(300-T_(2))`
or `1500-5T_(2)=t_(2)or 6T_(2)=1500`
`therefore T_(2)=(1500)/(6)=250 K`
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