Question

what is angle of contact and capillarity?????

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Answer 1

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Angle of Contact. Angle of contact is the angle which is tangent to a liquid surface at the point of contact makes with the solid surface inside the liquid. It's value is acute (90o) for liquid which do notwet the walls of container. A glass tube of very fine bare (hair like) is known as capillary tube.....

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Answer 2

The contact angle is the angle, conventionally measured through the liquid, where a liquid–vapor interface meets a solid surface.