Correct Answer - Option 3 : 0.87

__Concept:__

\(kinematic~ viscosity= \frac {dynamic ~ viscocity}{density ~of ~fluid}\)

\(ν = \frac {μ}{ρ }\)

density = specific gravity × 1000

__Calculation:__

__Given:__

μ = 0.7 poise = 0.07 kg/ms, specific gravity = 0.8,

∴ ρ = 0.8 × 1000 = 800 kg/m3

\(ν = \frac {μ}{ρ }\)

\(ν = \frac {0.07}{800}=0.87 \times 10^{-4}=0.87 \) stokes