When a fluid flows over a solid surface, the

1.	When a fluid flows over a solid surface, the
A.	velocity is uniform at any cross-section.
B.	velocity gradient is zero at the solid surface.
C.	resistance between the surface & the fluid is lesser as compared to that between the fluid layers themselves.
D.	velocity is not zero at the solid surface.
Answer» C. resistance between the surface & the fluid is lesser as compared to that between the fluid layers themselves.

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When a fluid flows over a solid surface, the

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