Property of the fluid, which offers resistance to the movement.

Which is among the following properties of the fluid, which offers resistance to the movement of one layer of the fluid over another adjacent layer of the fluid?

a. Mass density
b. Specific weight
c. Specific gravity
d. Viscosity

Correct Answer : d. Viscosity

Explanation :

During the fluid flow the top layer causes a shear stress on the adjacent lower layer while the lower layer causes a shear stress on the adjacent top layer. This property of the fluid is called as viscosity.