Two metallic spheres and are made of the same material and have got identical surface…

PHYSICS · Single correct · CBSE · Physics · Thermal Properties of Matter · Thermal Properties of Matter

Problem

Two metallic spheres S1S_1 and S2S_2 are made of the same material and have got identical surface finish. The mass of S1S_1 is thrice that of S2S_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 S1S_1 to that of S2S_2 is [1995S] (1) 13\frac{1}{3} (2) 13\frac{1}{\sqrt{3}} (3) 31\frac{\sqrt{3}}{1} (4) (13)13\left(\frac{1}{3}\right)^{\frac{1}{3}}

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