The coefficient of viscosity is defined from the relation

PHYSICS · Single correct · CBSE · Physics · Units and Measurements · Units and Measurements

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}

(b)

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

(c)

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

(d)

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