Which of the following statements is/are correct?
1
Reynolds number is a dimensionless quantity that is used to determine the type of flow pattern as laminar or turbulent.
2
Reynolds number is unitless quantity and ratio of inertial and Viscous Force.
3
Smoke moves in turbulent flow throughout.
4
If a fluid having viscosity of 0.4 Ns/m2 and relative density of 900 Kg/m3 through a pipe of 20 mm with a velocity of 2.5 m,then flow will be laminar.