If dynamic viscosity of a fluid is 0.011 poise and specific gravity is 0.95, then the kinematic viscosity of the fluid (in Stokes) will be :

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This question was previously asked in

UKPSC JE Civil 8 May 2022 Official Paper-II

Answer 1

Concept:

\(\nu={μ\over ρ}\)

Where \(\nu\) = Kinematic viscosity, μ = dynamic viscosity, and ρ = mass density.

Calculation:

Given; μ = 0.011 poise, and specific gravity (S.G.) = 0.95

We know that, 1 poise = 0.1 Pa-sec.

μ = 0.0011 Pa-sec, ρ = 950 kg/m³

Kinematic viscosity (\(\nu\)) = \({0.0011\over 950}\) = 1.1578 × 10^-6 m²/s or 0.0116 stokes

Kinematic viscosity (\(\nu\)) is 0.0116 stokes, Hence option (2) is correct.