Question

The shear stress in a fluid may be expressed as: $\tau \alpha {\left(\frac{dv}{dy}\right)}^2$
where $\frac{dv}{dy}$ is the velocity gradient and $n$ is constant. The $n$ value for Newtonian and non- Newtonian fluids will be respectively

• A. $n=1$ and $n>1$
• B. $n<1$ and $n>1$
• C. $n=1$ and $n<1$
• D. $n=1$ and $n\ne 1$

Answer 1

The correct option is D $n=1$ and $n\ne 1$

Option D