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The dimensional formula of coefficient of viscosity is |
$[MLT^{-1}]$ $[M^{-1}L^2T^{-2}]$ $[ML^{-1}T^{-1}]$ none of these |
$[ML^{-1}T^{-1}]$ |
F = 6$\pi\eta$ vr $[\eta]=\frac{[F]}{[vr]}=\frac{[MLT^{-2}]}{[LT^{-1}][L]}=[ML^{-1}T^{-1}]$ |
