A refrigerator works between 4^° C and 30^° C. 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)

1. 2.365 W

2. 23.65 W

3. 236.5 W

4. 2365 W

Doubtly Asked 30 Oct 2026 NEET UG 2016 Phase 1 neet Save WhatsApp Report

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Best answer

Answer: 3. 236.5 W

Key idea: for a refrigerator, \(\text{COP}=\dfrac{T_2}{T_1-T_2}=\dfrac{Q_2}{W}\).

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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