Shape of menuscus of a liquid of zero an...

Shape of menuscus of a liquid of zero angle of contact is

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Molecular forces exist between the molecules of a liquid in a container. The molecules on the surface have unequal force leading to a tension on the surface. If this is not compensated by a force, the equilibrium of the liquid will be a difficult task. This leads to an excess pressure on the surface. The nature of the meniscus can inform us of the direction of the excess pressure. The angle of contact of the liquid decided by the forces between the molecules, air and container can make the angle of contact. The direction of the excess pressure in the meniscus of a liquid of angle of contact 2pi//3 is

Nature of meniscus for liquid of 0^(@) angle of contact

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When a cylindircal tube is dipped vertically into a liquid the angle of contact is 80^(@) . When the tube is dipped with an inclination of 40^(@) the angle of contact is :

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Expression for the height of capillary rise between two parallel plates dipping liquid of density sigma separated by a distance d. The surface tension of the liquid is T. [Take angle of contact to be zero]

ALLEN-ELASTICITY, SURFACE TENSION AND FLUID MECHANICS-Exercise 1 (Surface Tension)

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