explain role of cohesive force and adhesive force in capillarity rise and capillary depression?
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The rise in the liquid which is due to the forces of adhesion, cohesion and surface tension as well. If forces which are adhesive the liquid-capillary that is more than the force which is cohesive liquid-liquid then the liquid rises as in case of water rise in a glass capillary.
The rise or fall of the surface of a liquid within a very narrow tube due to difference in cohesive force within the molecules of liquid and adhesive force between the liquid and the wall of the tube is known as capillary action.
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