a hollow sphere[inner radius r and outer radius R] and sphere of radius R are heated to same temperature ,which will cool faster and why
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3 Answers
1the hollow sphere will colll faster............
it can be proved by he stefan's law
we know the rate of colling is
where theta is temp. of body & thetanot is tepm of atmosphere
where k is a cofficiant & its value is
where all are constant & m is the mass of body........
so for lighter body rate of cooling is faster...............
so HOLLLLLLLOW..
