The unit of dynamic viscosity of a fluid is

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JKSSB JE (Civil) Official Paper (Held On: 19 Nov, 2023)

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Answer 1

Explanation:

Dynamic viscosity (μ), also called absolute viscosity, is defined as the measure of the internal resistance of a fluid to flow when an external force is applied.
It expresses the relationship between shear stress and velocity gradient within the fluid.
It quantifies the force required to move one layer of fluid over another.
A fluid with high dynamic viscosity (such as honey) resists flow more than a fluid with low dynamic viscosity (such as water).
SI Unit: Pa·s or Ns/m²

Additional Information

Kinematic viscosity (ν) is defined as the ratio of dynamic viscosity (μ) to the density of the fluid (ρ). It measures the fluid’s resistance to flow under the effect of gravity rather than an applied force.
It describes how easily a fluid flows in a gravitational field.
Important in flow problems where both viscosity and density influence motion (e.g., in calculating Reynolds number).
SI Unit: m²/s