A solid sphere of radius r1 = 20 mm is placed concentrically inside a hollow sphere of radius r2 = 30 mm. The view factor F21 for radiation heat transfer is
A. 2/3 B. 4/9 C. 8/27 D. 9/4
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Edited: Jul 12, 2023
View Factor in Sphere - GATE ME '14
View Factor in Sphere - GATE ME '14
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