Dimensions of coefficient of viscosity are

M L^{2} T^{- 2}

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M L^{2} T^{- 1}

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M L^{- 1} T^{- 1}

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M L T

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Solution

The correct option is C $M L^{- 1} T^{- 1}$
$F = - η . A \frac{d v}{d x} \Rightarrow [η] = [M L^{- 1} T^{- 1}]$ where A is the area, v the velocity and dx the change in displacement.

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