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  4. There are two spherical balls A and B of the same material with same surface finish but the radius of A is half Type equation here.that of B. It A and B are heated to the same temperature and allowed to cool then

Q. There are two spherical balls and of the same material with same surface finish but the radius of is half Type equation here.that of . It and are heated to the same temperature and allowed to cool then

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Solution:

Rate of cooling area of the body

since, radius of is that of , rate of cooling is that of .

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