A very thin metallic shell of radius r is heated to temperature T and then allowed to cool. rate of

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10-2.Transmission of Heat

easy

A very thin metallic shell of radius $r$ is heated to temperature $T$ and then allowed to cool. The rate of cooling of shell is proportional to ........

A

$r T$

B

$\frac{1}{r}$

C

$r^2$

D

$r^0$

Solution

(d)

Rate of cooling depends on temperature of body, surrounding temperature, not on radius.

Standard 11

Physics

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