The critical radius of insulation for a spherical shell is (where, K = thermal conductivity of insulating material h 0 = heat transfer coefficient at the outer surface)

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

1.	The critical radius of insulation for a spherical shell is (where, K = thermal conductivity of insulating material h 0 = heat transfer coefficient at the outer surface)
A.	K / h 0
B.	2 K / h 0
C.	h 0 / K
D.	h 0 / 2K
Answer» C. h 0 / K

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The critical radius of insulation for a spherical shell is (where, K = thermal conductivity of insulating material h 0 = heat transfer coefficient at the outer surface)

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