Question

stokes law cannot be used if Reynolds number is more than
a.0.2
b.1.8
c.9.0
d.18.0​

Answer 1

Hello Friend..!!

The answer of u r question is..!!

Option.C

Thank you..!!

Answer 2

Answer:

If Reynolds number is greater than one then Stokes law is not applicable.

Therefore option (a) is correct.

Explanation:

• Stoke's law is based on the concept of equivalent diameter. We can consider the diameter of an imaginary sphere as the equivalent diameter because it has the same diameter and terminal velocity as a soil particle.
• Stoke's law is valid only on the spherical particles because it needs their diameter. That's why it is not valid for clay particles as they don't have spherical shape.
• For the applicability of stokes law, for the minimum size of particle should be $0.0002mm$ and maximum particle size up to $0.2mm$.