What is the SI unit for dynamic viscosity?

This question was previously asked in
SSC JE CE Previous Paper (Held on 23 Mar 2021 Morning)
View all SSC JE CE Papers >
  1. Newton
  2. Stoke
  3. Pascal second
  4. Pascal

Answer (Detailed Solution Below)

Option 3 : Pascal second
Free
Building Materials for All AE/JE Civil Exams Mock Test
14.9 K Users
20 Questions 20 Marks 20 Mins

Detailed Solution

Download Solution PDF

Explanation:

Viscosity: The property that represents the internal resistance of a fluid to motion (i.e. fluidity) is called viscosity. There are two types of viscosity:

Dynamic viscosity: It is the property of a fluid which 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 = 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.
Latest SSC JE CE Updates

Last updated on May 28, 2025

-> SSC JE notification 2025 for Civil Engineering will be released on June 30. 

-> Candidates can fill the SSC JE CE application from June 30 to July 21.

-> The selection process of the candidates for the SSC Junior Engineer post consists of Paper I, Paper II, Document Verification, and Medical Examination.

-> Candidates who will get selected will get a salary range between Rs. 35,400/- to Rs. 1,12,400/-.

-> Candidates must refer to the SSC JE Previous Year Papers and SSC JE Civil Mock Test, SSC JE Electrical Mock Test, and SSC JE Mechanical Mock Test to understand the type of questions coming in the examination.

-> The Staff Selection Commission conducts the SSC JE exam to recruit Junior Engineers in different disciplines under various departments of the Central Government.

Get Free Access Now
Hot Links: teen patti rich teen patti neta teen patti bodhi teen patti teen patti master plus