How does the dynamic viscosity of (a) liquids and (b) gases vary with temperature?
In this problem, we have to find out, how the dynamic viscosity of liquids and gases changes with temperature.
So, we should know what is viscosity. Viscosity can be defined as the extent to which a fluid resists a tendency to flow.
Dynamic viscosity of a fluid expresses its resistance to shearing flows, where adjacent layers move parallel to each other at different speeds.