Four identical copper cylinders are painted If they are all heated to the same temperature and left in vacuum which will cool most rapidly .

Four identical calorimeters painted in different colors, are heated to same temperature and then allowed to cool in vacuum. Which will cool fastest?

Two spheres A and B have the same radii but the capacity of A is greater than that of B . The surfaces of both are painted black. They are heated to the same temperature and allowed to cool in vacuum. Then,

Two balls of same material and same surface finish have their diameters in the ratio 1:2. They are heated to the same temperature and are left in a room to cool by radiation, then the initial rate of loss of heat

Two balls of same material and same surface finish have their diameters in the ratio 1:2. They are heated to the same temperature and are left in a room to cool by radiation, then the initial rate of loss of heat

Two spheres A and B have radius but the heat capacity of A is greater than that of B. The surfaces of both are painted black. They are heated to the same temperature and allowed to cool. Then initially

Two spheres A and B have radius but the heat capacity of A is greater than that of B. The surfaces of both are painted black. They are heated to the same temperature and allowed to cool. Then initially