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Poise is the unit of


1. Dyne-cm/s2
2. Dyne-cm/s
3. Dyne-s/cm
4. Dyne-sec/cm2
5.

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Best answer
Correct Answer - Option 4 : Dyne-sec/cm2

Explanation :

Dynamic viscosity: 

It is the property of a fluid that offers resistance to the movement of one layer of fluid over an adjacent layer of the fluid.

  • Its SI unit is N-s/m2 or Pa-s.
  • Its C.G.S unit is Poise.
  • 1 Poise = 1 dyne sec/cm2 = 0.1 Pa-s = 0.1 Ns/m2

Kinematic Viscosity: 

The ratio of dynamic viscosity to density appears frequently and this ratio is given by the name kinematic viscosity.

\({\rm{Kinematic\;Viscosity\;}}\left( {\rm{\gamma }} \right) = {\rm{\;}}\frac{{{\rm{Dynamic\;viscosity\;}}\left( {\rm{\mu }} \right)}}{{{\rm{density\;}}\left( {\rm{\rho }} \right)}}\)

  • Its SI unit  = m2/s.
  • Its C.G.S unit = Stoke or cm2/s.
  • 1 Stoke = 10-4 m2/s.

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