MHT CET Physics question
Two metallic spheres and are made of the same material and have identical surface finish. The mass of is three times that of . 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 to that of is
Answer: (B)
Solution
Rate of cooling and , so and the cooling-rate
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