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Which one of the following represents the correct dimensions of the coefficient of viscosity?

1. ML-1T-1
2. MLT-1
3. ML-1T-2
4. ML-2T-2
in Physics | 14 views

From stokes law, Viscous force F = $$6\pi \eta rv$$
$$\Rightarrow \eta = {F \over {6\pi rv}}$$
$$\therefore[\eta] = {[{ML{T^{ - 2}}]} \over {[L][L{T^{ - 1}}]}}$$
$$\Rightarrow [\eta] = [M{L^{ - 1}}{T^{ - 1}}]$$