A body cools down from $75^{\circ} \mathrm{C}$ to $60^{\circ} \mathrm{C}$ in 10 minutes. It will cool down…
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
10 minutes
Less than 10 minutes
More than 10 minutes
Less than or more than 10 minutes depending on its mass
Solution
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.