Two balls of same material and finish have their diameters in the rati – McqOptions

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

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