MHT CET 2023 Physics question

Select the WRONG statement from the following. In a streamline flow

(A)velocity of a fluid at a given point is never constantCorrect
(B)velocity is smaller than critical velocity
(C)layers are always parallel
(D)the particles do not move in random direction

Answer: (A)

Solution

In streamline (steady, laminar) flow every particle passing a given point follows the same path with the same velocity, so the velocity at a given point is constant in time. Statement (a), "never constant", is therefore wrong. The other statements are

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Question ID VK-097235