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a spherical ball A of surface area 20 cm 2 is kept at the centre of a hollow spherical shell B of area 80 cm 2 . the surface of A and the inner surface of B emits as blackbodies. both A and B are at 300K . How much of the energy emitted by the inner surface of B falls back on this surface itself?

a spherical ball A of surface area 20 cm2 is kept at the centre of a hollow spherical shell B of area 80 cm2. the surface of A and the inner surface of B emits as blackbodies. both A and B are at 300K . How much of the energy emitted by the inner surface of B falls back on this surface itself?
 

Grade:11

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