Question

If p is the density and η is the coefficient of viscosity of fluid that flows with a speed v in the pipe of diameter d, the correct formula for Reynolds number R_e is ______.

Options

• `R_e = (ηd)/(rhoν)`

• `R_e = (rhoν)/(ηd)`

• `R_e = (rhoνd)/η`

• `R_e = η/(rhoνd)`

Answer 1

If p is the density and η is the coefficient of viscosity of fluid that flows with a speed v in the pipe of diameter d, the correct formula for Reynolds number R_e is `underlinebb(R_e = (rhoνd)/η)`.

Explanation:

Reynold's number is given as R_e = `(rhoνd)/η`