Question 235: Units , Dimensions and Error Analysis

Question

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

Accepted Answer

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

Answer

ML
-1
T
-1

Answer

MLT
-1

Answer

ML
-1
T
-2

Answer

ML
-2
T
-2

Units , Dimensions and Error Analysis

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

Choose the correct answer: