Jawaban:

A liquid rises in a capillary tube due to the phenomenon known as capillary action. Capillary action occurs when the cohesive forces between the liquid molecules are stronger than the adhesive forces between the liquid and the walls of the capillary tube.

When a liquid is placed in a capillary tube, the cohesive forces between the liquid molecules cause the liquid to be attracted to itself, while the adhesive forces between the liquid and the walls of the tube cause the liquid to be attracted to the walls. If the cohesive forces are stronger than the adhesive forces, the liquid will be pulled up the walls of the tube, resulting in the phenomenon known as capillary action.

Capillary action is commonly observed in small tubes or pores, such as those found in plants. In plants, capillary action is responsible for the movement of water and nutrients from the roots to the rest of the plant. It is also used in a variety of scientific and technological applications, such as in the design of inkjet printers and in the measurement of small amounts of liquid.