Q. The viscosity of a liquid,
Solution:
? The property of a liquid by which forces are exerted between layers so as to reduce their relative motion is called viscosity.
? The liquids flow in different layers. The layer at the top will be flowing with maximum velocity.
? The lower layer will be flowing with lesser and lesser velocities.
? The reason for this change in velocity from layer to layer is the frictional force between liquid layers.
? Different liquids possess different viscosity.
? Liquids of large viscosity are called viscous liquids. Ex: Glycerine, Honey, Castor oil etc
? Liquids of small viscosity are called mobile liquids. Ex: Water, Kerosene etc
? The viscosity of an ideal fluid is zero.
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