Question

Reynolds number formula is given by
$p$-density of fluid
$v$-velocity of fluid
$u$-viscosity of fluid
$l$-length or diameter of the fluid

• A. $\frac{pvl}{u}$
• B. $\frac{pvu}{l}$
• C. $\frac{pul}{v}$
• D. $\frac{uvl}{p}$

Answer 1

The correct option is A $\frac{pvl}{u}$

Reynolds number, used to check the nature of flow is given as $R_e=\frac{\varrho vl}{\mu }$; here $\mu$ is viscocity of fluid and l is length of fluid.