Nepal Pharmacy council exam Question on Andearson pipette

Andearson pipette is used to determine the size of the particle ii follows
a. dracy's law
b. hook's law
c. stoke's law

d. Nernst Law
For correct answer


 Darcy's law at constant elevation is a simple proportional relationship between the instantaneous discharge rate through a porous medium, the viscosity of the fluid and the pressure drop over a given distance.

Hooke's law is a principle of physics that states that the force  F needed to extend or compress a spring by some distance  X is proportional to that distance. That is:  F= kX  where k  is a constant factor characteristic of the spring, its stiffness

Nernst equation  related to electric potential

Stoke's law At terminal (or settling) velocity, the excess force Fg due to the difference of the weight of the sphere and the buoyancy on the sphere, (both caused by gravity)

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