Themperature of a body `theta` is slightly more than the temperature of the surrounding `theta_(0)` its rate of cooling `(R )` versus temperature of body `(theta)` is plotted its shape would be .

As difference of temperature of body and surroundings increases, rate of cooling

When a body has the same temperature as that of its surroundings

When a body has the same temperature as that of its surroundings

The temperature of water in calorimeter is theta and the temperature of surrounding is theta_(0 ) ( lt theta) . Observation are recorded for temperature difference (theta- theta_0) and time t. The cooling curve is best represented in graph.

A hot body is kept in cooler surroundings. Its rate of cooling is 3^(@)C /min when its temperature is 60^(@)C and 1.5^(@)C / min when its temperature is 45^(@)C . Determine the temperature of the surroundings and the rate of cooling when the temperature of the body is 40^(@)C

A body is heated to a temperature of 75^(@)C and is allowed to cool. If the temperature of the surrounding is 35^(@)C , then the temperature at which the rate of cooling will be exactly half of that initially will be