What is Reynold's number ? Give its significance.

Explanation

Reynold's number (Rc) is a dimensionless number, which is used to find out the nature of flow of the liquid.
`R_(c ) = (rho v D)/(eta)`
where, `rho` - density of the liqudi, v - The velocity of flow of liquid. D - Diameter of the pipe `eta` - The coefficient of viscosity of the fluid.