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1. |
A sphere of radius 'R‚ÇÅ' is enclosed in a sphere of radius 'R‚ÇÇ'. The view (or shape) factor for radiative heat transfer of the outer sphere with respect to the inner sphere is# |
A. | 0 |
B. | R‚ÇÇ/(R‚ÇÅ+R‚ÇÇ) |
C. | 1 |
D. | (R‚ÇÅ/R‚ÇÇ)2 |
Answer» C. 1 | |