assuming that the critical velocity of a viscous liquid flowing through a capillary tube depends upon radius r of a tube,density of the tube and co-efficient of viscosity of the liquid. use the method of dimensions to obtain a relation between these quantities.

Dear Student!!

According to the given problem,

K is a constant. 

In dimension form we can write,

Solving equation (i), (ii) and (ii), we get

Putting this value in eq. A

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