Question

why the liquid rises or falls in a capillary tubewhy the liquid Rises or falls in a capillary tube

Answer 1

This action in which a liquid rises, or is depressed, in a tube is called capillary action. Capillary action comes about as a consequence of both the adhesive forces between the liquid and the tube and the surface tension of the liquid. The surface of the liquid in a capillary tube is called the meniscus.

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