6702Chemical EngineeringMedium
When a fluid flows over a solid surface, the________?
AVelocity is uniform at any cross-section
BVelocity is not zero at the solid surface
CResistance between the surface & the fluid is lesser as compared to that between the fluid
DVelocity gradient is zero at the solid surface
Correct answer
D. Velocity gradient is zero at the solid surface
Explanation
The correct answer is Velocity gradient is zero at the solid surface.