A hollow and a solid sphere of same material and identical outer surface under identical condition are heated to the same temperature at the same time (both have same e, a):

A solid cube and a solid sphere of the same material have equal surface area. Both are at the same temperature 120^(@)C , then

A solid cube and a solid sphere of the same material have equal surface area. Both are at the same temperature 120^(@)C , then

A solid cube and a solid sphere of the same material have equal surface area. Both are at the same temperature 120^(@)C , then

A solid cube and a solid sphere of the same material have equal surface area. Both are at the same temperature 120^(@)C , then

A solid sphere and a hollow sphere of the same material and of equal radii are heated to the same temperature.

A solid sphere and a hollow sphere of the same material and of equal radii are heated to the same temperature.

A solid sphere and a hollow sphere of the same material and of equal radii are heated to the same temperature.

A metallic solid sphere and a hollow sphere of same material and external radius are heated to the same temperature and allowed to cool in the same environment .Which of the two has aa greater cooling rate?