Question

The kinematic viscosity of a liquid is 6 stokes. What will the kinematic viscosity in m²/s?

1. 6 × 10-2 m2/s
2. 6 × 10-4 m2/s
3. 6 × 10-3 m2/s
4. 6 × 102 m2/s

Answer 1

Correct Answer - Option 2 : 6 × 10-4 m2/s

Concept:

Kinematic viscosity: It is defined as the ratio between the dynamic or absolute viscosity and density of the fluid, \(\nu = \frac{\mu }{\rho }\)

Units of Kinematic viscosity:

The SI unit of kinematic viscosity is m²/s and the C.G.S. unit of kinematic viscosity is cm²/s or stokes.

1 stoke = 10^-4 m²/s.

Calculation:
Given:

Kinematic viscosity = 6 stokes

1 stoke = 10^-4 m²/s  

6 stokes = 6 × 10^-4 m²/s