The figure shows a system of two concent...

The figure shows a system of two concentric spheres of radii `r_1 and r_2` are kept at temperature `T_1 and T_2`, respectively. The radial rate of flow of heat in a substance between the two concentric spheres is proportional to

A

`(r_(1)r_(2))/((r_(1)-r_(2)))`

B

`(r_(2)-r_(1))`

C

`(r_(2)-r_(1))(r_(1)r_(2))`

D

`ln ((r_(2))/(r_(1)))`

Text Solution

Verified by Experts

The correct Answer is:

A

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