Ice is used in a cooler in order to cool its contents. Which of the following will speed up the cooling process?

The rates of cooling of two different liquids put in exactly similar calorimeters and kept in identical surroundings are the same if

A block of metal is heated to a temperature much higher than the room temperature and allowed to cool in a room free from air currents. Which of the following curves correctly represents the rate of cooling

According to ‘Newton’s Law of cooling’, the rate of cooling of a body is proportional to the

A solid sphere and a hollow sphere of the same material and size are heated to the same temperature and allowed to cool in the same surroundings. If the temperature difference between each sphere and its surroundings is $T$, then

For a small temperature difference between the body and the surroundings the relation between the rate of loss heat $R$ and the temperature of the body is depicted by