NEET Physics Newton's Law of Cooling MCQ Question
A body cools from 70°C to 60°C in 10 minutes in a room maintained at 20°C. Assuming Newton's Law of Cooling applies, approximately how long will it take for the body to cool from 60°C to 50°C under the same conditions?
10 minutes
12 minutes
15 minutes
20 minutes
Correct Answer
Detailed Explanation
According to Newton's Law of Cooling, the rate of cooling is proportional to the temperature difference between the body and its surroundings. As the body cools, this difference decreases, thus increasing the time required for the same temperature drop. The calculation involves applying the proportional relationship to the new conditions.
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