Physics

Problem

The coefficient of viscosity

\eta

is defined from the relation

F = \eta A\,\dfrac{v}{l}

, where

F

is the force needed to move a layer of liquid of area

A

with velocity

v

relative to another layer separated by distance

l

. What is the dimensional formula of

\eta

? a)

M^{1}L^{-2}T^{-1}

M^{1}L^{-1}T^{-1}

M^{1}L^{-1}T^{-2}

M^{0}L^{-1}T^{-1}