Two black metallic spheres of radius 4m, at 2000 K and 1m at 4000 K – McqOptions

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1.	Two black metallic spheres of radius 4m, at 2000 K and 1m at 4000 K will have ratio of energy radiation as [RPET 2000; AIEEE 2002]
A.	1 : 1
B.	4 : 1
C.	1 : 4
D.	2 : 1
Answer» B. 4 : 1

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