First slide
Dimensions
Question

According to Newton, the viscous force acting between liquid layers of area A and velocity gradient ΔvΔzis given by F=ηAΔvΔzwhere ηis constant called coefficient of viscosity. The dimensions of η are

Moderate
Solution

F=ηAΔvΔz   η=ML1T1

As  F=MLT2,  A=L2,   ΔvΔz=T1

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