The fundamental equation for viscous flow is given by pbh /6 l where symbols have their usual meanings.

The fundamental equation for viscous flow is given by pbh /6 l where

1.	The fundamental equation for viscous flow is given by pbh /6 l where symbols have their usual meanings.
A.	6 is to be replaced by 3
B.	6 is to be replaced by 12
C.	6 is to be replaced by 9
D.	6 is to be replaced by 15
Answer» C. 6 is to be replaced by 9