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A very thin metallic shell of radius r isvheatedvto temp. T and then allowed to cool.The rate of cooling of shell is proportional to 1)rT 2)1/r 3)rr 4)r^°

Answer» A very thin metallic shell of radius r isvheatedvto temp. T and then allowed to cool.The rate of cooling of shell is proportional to 1)rT 2)1/r 3)rr 4)r^°


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