NEET | 2016Work, Power and EnergyHard

Question

A refrigerator works between 4oC and 30oC. It is required to remove 600 calories of heat every second inorder to keep the temperature of the refrigerated space constant. The power required is:
(Take 1 cal = 4.2 Joules)

Options

A.

2.365 W

B.

23.65 W

C.

236.5 W

D.

2365 W

Solution


600+w600=303277
+1w600=1+26277
w = 600 ×26277×4.2
w = 236.5

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