Question

The dimension of coefficient of viscosity $\eta$ is :

• A. $\left[M{L}^{-1}{T}^{-1}\right]$
• B. $\left[ML{T}^{-2}\right]$
• C. $\left[ML{T}^{-1}\right]$
• D. $\left[M{L}^2{T}^{-2}\right]$

Answer 1

The correct option is A $\left[M{L}^{-1}{T}^{-1}\right]$

Viscosity has SI unit of $Pa.s=(N.s)/m^2=kg/(s.m)$

So the dimension is $\left[M{L}^{-1}{T}^{-1}\right]$