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30. An ideal refrigerator has a freezer at a temperature of

-130c .  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

Ans. c

(15)

4.2/5 - (8 votes)

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