Where F is force, L is length and T is time

This question was previously asked in

MPSC AMVI Official Paper 4: 2005

Option 1 : FL^{-2} T

MPSC AMVI Official Paper 1: Set A/2017

897

150 Questions
300 Marks
90 Mins

__Concept:__

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

- Dynamic viscosity: This is also termed as absolute viscosity. A common unit of dynamic viscosity is poise.
- 1 poise = 0.1 Pa.s = 0.1 N.s/m
^{2} - Kinematic Viscosity: The ratio of dynamic viscosity to density appears frequently and this ratio is given by the name kinematic viscosity. Its unit is m
^{2}/s . - ∴ C.G.S unit of kinematic viscosity is cm2/s or, Stoke.
- (1 stoke = 0.0001 m
^{2}/s) - The force acted on the body is given as,
- \(F=\frac{μ AV}{y}\)
- where, μ = viscosity, A = surface area, V = velocity. y = distance between surface area and body
- Therefore, \(\mu =\frac{Fy}{AV}\) ⇒ \(\frac{FLT}{L^2 L}=FL^{-2}T\)