1.

Two black metallic spheres of radius 4m, at 2000 K and 1m at 4000 K will have ratio of energy radiation as

A. 0.0423611111111111
B. 0.167361111111111
C. 0.0444444444444444
D. 0.0840277777777778
Answer» B. 0.167361111111111


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