Question

Darcy’s law is valid if:
(1) The flow is laminar
(2) The flow is turbulent
(3) The flow is due to water
(4) The flow is laminar or turbulent

Answer 1

option 1 is the answer

Answer 2

Darcy's law is an equation that describes the flow of a fluid through a porous medium. The law was formulated by Henry Darcy based on the results of experiments[1] on the flow of water through beds of sand, forming the basis of hydrogeology, a branch of earth sciences.

The flow is due to water .
This is answer