Question

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
(1) rT
(2)1/r

$(3) {r}^{2}$

(4)r°​

Answer 1

Answer:

r to t power 0

Explanation:

acc. to newtons law,

dT/dt is directly proportional to T-T

therefore,

ana is r to t power 0 as the ans will be 1.