Question

describe capillary action 1)capillary rise 2) capillary fall ​

Answer 1

Answer:

Capillary fall

Two forces are acting on the mercury inside the tube. First one is hydrostatic force that acting upward, and second one is downward force due to surface tension. In equilibrium condition these forces must be equal. Let h = height of capillary depression.

Capillary action

Capillary action is important for moving water (and all of the things that are dissolved in it) around. It is defined as the movement of water within the spaces of a porous material due to the forces of adhesion, cohesion, and surface tension.

Capillary rise

A rise in a liquid above the level of zero pressure due to a net upward force produced by the attraction of the water molecules to a solid surface, e.g. glass, soil (for those cases where the adhesion of the liquid to the solid is greater than the cohesion of the liquid to itself)

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Answer 2

Answer:

Expression for Capillary fall

Two forces are acting on the mercury inside the tube. First one is hydrostatic force that acting upward, and second one is downward force due to surface tension. In equilibrium condition these forces must be equal. Let h = height of capillary depression.

Explanation: