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A refrigerator works between 4⁰C and 30⁰C. It is required to remove 600 calories of heat every second in order to keep the temperature of the refrigerated space constant. The power required is : (Take 1 cal = 4.2 joules)

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2.365 W

23.65 W

236.5 W

2365 W

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detailed solution

Correct option is C

Q1Q2=T1T2 ⇒Q2+WQ2=T1T2 w=Q2T1T2-1=600×4.2×303277-1=236.5J Power=worktime=236.51=236.5W

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A refrigerator works between 40C and 300C. It is required to remove 600 calories of heat every second in order to keep the temperature of the refrigerated space constant. The power required is : (Take 1 cal = 4.2 joules)

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A refrigerator works between 4⁰C and 30⁰C. It is required to remove 600 calories of heat every second in order to keep the temperature of the refrigerated space constant. The power required is : (Take 1 cal = 4.2 joules)