Which of the following symbols is used to represent viscosity?

CONCEPT:

• Viscosity: The relative motion between different layers of liquid or gases is opposed by a force, which is known as the Viscous force and this property is known as Viscosity.
  • SI unit of Viscosity is Decapoise (Kg/ms) or pascal second.
  • Symbol of viscosity is \(\eta\)
• Some properties of viscosity are:
  • This is the property of liquids and gases both.
  • In the case of liquid, it is seen because of the cohesive force between the molecules of the liquid.
  • In case of a gas, it is seen because of the diffusion of its molecules from one layer to other layers.
  • The viscosity of gases is very less than that of liquids.
  • No viscosity is there in solids.
  • Viscosity on an ideal fluid is always zero.
  • The viscosity of liquids decreases with the rise in temperature.
  • The viscosity of gases increases with the rise in temperature.

EXPLANATION:

• \(\eta\) is used as the symbol for viscosity. So option 3 is correct.