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Question
In a laminar flow between two fixed plates held parallel to each other at a distance d, the shear stress is:
(1) Maximum at plane d/2 away from each plate and zero at the plate boundaries.
(2) Zero throughout the passage.
(3) Maximum at the plate boundaries and zero at a plane d/2 away from each plate.
Which of the above statements is/are correct?
A.
1 only
B.
3 only
C.
2 only
D.
1, 2 and 3
Answer ( Option B)

3 only

Solution

Hence statement (3) is correct.

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