Adhesion of water to the walls of a tube will cause an upward force on the liquid at the edges and result in a meniscus which turns upward. The surface tension is responsible for holding the surface. This causes the liquid to flow up the tube through capillary action occurs when the attractive forces to the walls is stronger than the cohesive forces between the liquid molecules.
The diameter of the capillary tube can be calculated using the formula below:
Water rises in a glass capillary tube to a height of 17 cm. What is the diameter of the capillary tube?
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