AP EAMCET · PHYSICS · Thermal Properties of Matter
A body cools down from \(75^{\circ} \mathrm{C}\) to \(60^{\circ} \mathrm{C}\) in 10 minutes. It will cool down from \(65^{\circ} \mathrm{C}\) to \(55^{\circ} \mathrm{C}\) in a time
- A 10 minutes
- B Less than 10 minutes
- C More than 10 minutes
- D Less than or more than 10 minutes depending on its mass
Answer & Solution
Correct Answer
(C) More than 10 minutes
Step-by-step Solution
Detailed explanation
From Newton's law of cooling, rate of cooling of substance is directly proportional to temperature difference with the surrounding. So as the temperature reduces, the rate of cooling decreases and time of cooling increases.
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