Fluid Mechanics
Which of the following must be followed by the flow of a fluid (real or ideal)? (I) Newton's law of viscosity. (II) Newton's second law of motion. (III) The continuity equation. (IV) Velocity of boundary layer must be zero relative to boundary. (V) Fluid cannot penetrate a boundary.

II, IV, V
I, II, III
I, II, V
II, III, V

ANSWER DOWNLOAD EXAMIANS APP

Fluid Mechanics
A stream line is

Drawn normal to the velocity vector at every point
A line connecting the mid points of flow cross-section
Always the path of particle
Fixed in space in steady flow

ANSWER DOWNLOAD EXAMIANS APP