A hot object loses heat to its surroundings in the form of heat radiation. The rate of loss of heat depends on

The heat radiated by hot body depends on

Rate Of Loss Heat

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

Two spheres of same material and radius r and 2r are heated to same temperature and are kept in identical surroundings, ratio of their rate of loss of heat is

Two spheres of same material and radius r and 2r are heated to same temperature and are kept in identical surroundings, ratio of their rate of loss of heat is

If the end of metal rod is heated then the rate of flow the heat does not depend on

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