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  1. The flow of water (mass density = 1000 kg/m3 and kinematic viscosity = 10-6 m2/s) in a commercial pipe, having equivalent roughness ks as 0.12 mm, yields an average shear stress at the pipe boundary = 600 N/m2. The value of ks/δ' (δ' being the thickness of laminar sub-layer) for this pipe is

    2. A.
    0.25
    B.
    0.50
    C.
    6.0
    D.
    8.0

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    Answer : Option D

    Explanation :

    No answer description available for this question. Let us discuss.

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