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Question

If the ratio of the lower to the higher absolute temperature is 7/8 , then what will  be the  COP of  the Carnot  refrigerator?

यदि निम्न और उच्च निरपेक्ष तापमान का अनुपात 7/8 है, तो कार्नोट रेफ्रिजरेटर का COP क्या होगा?

A.

6

B.

7

C.

8

D.

Insufficient data

Answer ( Option B)

7

Solution

Given :Ratio of temperature 

..Method 1..

COP of Carnot refrigeration,

Hence, the correct option is (B).

..Method 2..

Hence, the correct option is (B).

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