A body cools in 7 minutes from 60°C to 40°C. The temperature of the surrounding is 10°C. The temperature of the body after the next 7 minutes will be
Text Solution
Verified by ExpertsThe correct answer is:
D
Newton's law of cooling states that
…. (i)
where T 0 is the temperature of the surrounding. From equation (i),
Let the temperature of the body after the given time be x °C. By Newton's law of cooling,
x = 28 °C
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