The critical radius of insulation for a spherical shell is (where, = thermal conductivity of insulating material = heat transfer coefficient at the outer surface)

The critical radius of insulation for a spherical shell is (where, =

1.	The critical radius of insulation for a spherical shell is (where, = thermal conductivity of insulating material = heat transfer coefficient at the outer surface)
A.	/
B.	2
C.	/
D.	/
E.	/
Answer» C. /

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The critical radius of insulation for a spherical shell is (where, = thermal conductivity of insulating material = heat transfer coefficient at the outer surface)

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