In Newton's law of viscosity, which states that the shear stress is proportional to the _____________ Co-efficient of viscosity is called dynamic or absolute viscosity(where, V = velocity, Vg = velocity gradient) ?
Correct answer: D. Vg
- A. V2
- B. 1/V2
- C. 1/Vg
- D. Vg
Explanation
Newton’s law gives shear stress as τ = μ(dV/dy), so it is proportional to the velocity gradient, represented here by Vg. The coefficient μ is the dynamic or absolute viscosity.
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