a very thin metallic shell of radius R is heated to temperature t and then allowed to cool the rate of cooling of cell is proportional to
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Here rate of cooling does not depends on radius or area so it is proportional to r to the power zero..n it becomes 1
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Given that,
The radius of the thin metallic shell is R which is heated to temperature T and then allowed to cool.
According to Newton’s law of cooling, the rate of cooling dT/dt is directly proportional to T-T. Which means that the rate of cooling is independent of the shells radius. Therefore, the rate of cooling is proportional to R to the power zero(R0).
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