Kerosene oil rises in a wick of lantern because of

Kerosene oil rises in the wick of a lantern due to capillary action, also known as capillarity. This phenomenon occurs because of the interplay between adhesive forces (attraction between the oil and the wick fibers) and cohesive forces (attraction between oil molecules). The wick, typically made of cotton or fibrous material, contains numerous tiny pores or narrow spaces that act as capillary tubes. When the adhesive force between the liquid and the solid surface is stronger than the cohesive force, the liquid is drawn upward against the force of gravity. This wicking action ensures a continuous supply of fuel to the flame, where the oil evaporates and burns. Similar effects are observed in the rising of sap in plants and the soaking of liquids by blotting paper.