Physics

Problem

Two metallic spheres

S_1

and

S_2

are made of the same material and have got identical surface finish. The mass of

S_1

is thrice that of

S_2

. Both the spheres are heated to the same high temperature and placed in the same room having lower temperature but are thermally insulated from each other. The ratio of the initial rate of cooling of

S_1

to that of

S_2

is [1995S] a.

\frac{1}{3}

\frac{1}{\sqrt{3}}

\frac{\sqrt{3}}{1}

\left(\frac{1}{3}\right)^{\frac{1}{3}}

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