Which one of the following represents the correct dimensions of the coefficient of viscosity?
option 1 is correct
From stokes law, Viscous force F = \(6\pi \eta rv\) \( \Rightarrow \eta = {F \over {6\pi rv}}\) \(\therefore[\eta] = {[{ML{T^{ - 2}}]} \over {[L][L{T^{ - 1}}]}}\) \( \Rightarrow [\eta] = [M{L^{ - 1}}{T^{ - 1}}]\)