Oil in wick of an oil lamp rises up due to the property of
Answers
Oil rises up to the wick in a lampowing to the surface tension phenomenon. It is a basic law of physics. It's due to capillary action.This effect is due to surface tension of liquids.The wick here acts as a capillary tube.
It is because of the capillary action phenomenon because of which oil rise up the wick in a lamp. Capillary action, or capillarity, is the ability of a liquid to flow in narrow spaces without the assistance of, and in opposition to external forces like gravity. The effect can be seen in the drawing up of liquids between the hairs of a paint-brush, in a thin tube, in porous materials such as paper, in some non-porous materials such as liquefied carbon fiber, or in a cell. It occurs because of inter-molecular attractive forces between the liquid and solid surrounding surfaces.