Question

define viscosity derive its relation with velocity gradient​

Answer 1

Viscosity is defined as the degree up to which a fluid resists the flow under an applied force; it is measured by the tangential friction force acting per unit area divided by the velocity gradient under conditions of streamline flow. ... In simple words, it explains the fluid's flow resistance.....

Answer 2

Answer:

Viscosity is defined as the degree up to which a fluid resists the flow under an applied force; it is measured by the tangential friction force acting per unit area divided by the velocity gradient under conditions of streamline flow. ... In simple words, it explains the fluid's flow resistance.