Answer:
Viscosity
Explanation:
Viscosity can be defined as a quantity expressing the magnitude of internal friction, as measured by the force per unit area resisting a flow in which parallel layers unit distance apart have unit speed relative to one another.
It is basically the opposite of fluidity, a process of ease of flow.
Mathematically, Viscosity = Shear stress/Shear rate
The S.I unit for Viscosity is Pascal-second.
