Two spherical balls of same material and surface finish have their dia – McqOptions

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1.	Two spherical balls of same material and surface finish have their diameters in the ratio of 2 : 1. Both are heated to same temperature and allowed to cool by radiation. Rate of cooling of big ball as compared to smaller one will be in the ratio of
A.	1 : 2
B.	2 : 1
C.	1 : 1
D.	4 : 1
Answer» E.

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