in CGS system , unit of viscosity

Detailed Solution:

viscosity = shear stress/(change in velocity/ change in distance) = (shear stress x change in distance)/change in velocity = (shear stress x change in distance)/ (distance/time) = (shear stress x distance x time)/ distance = shear stress x time = ( force/Area) x time = (force x time)/Area , by putting cgs unit of force = dyne, area = cm2, time= sec ,, we get viscosity = (dyne-sec)/cm2