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A sphere of radius 'R1' is enclosed in a sphere of radius 'R2'. The view (or shape) factor for radiative heat transfer of the outer sphere with respect to the inner sphere is | |
A. | 0 [Wrong Answer] |
B. | R2/(R1+R2) [Correct Answer] |
C. | 1 [Wrong Answer] |
D. | (R1/R2)2 [Wrong Answer] |