Question

On what factors do the critical velocity of the liquid depends?

Answer 1

Critical velocity is the velocity of  liquid flow upto which its flow is streamlined [laminar]and after which it flow becomes turbulent.

In other words , we can say that critical velocity is the speed and direction of flow of liquid through a tube changes from laminar to turbulent.

Factors on which critical velocity depends are as follows:
1. Coefficient of viscosity of liquid.
2. Density of liquid
3. Diameter of pipe through which the liquid flows.

Answer 2

Critical velocity is the velocity of  liquid flow upto which its flow is streamlined [laminar]and after which it flow becomes turbulent.