Oil rises up the wick in a lamp because (a)Oil is very light (b)Of the diffusion of oil through the wick (c)Of the surface tension phenomenon (d)Of the capillary action phenomenon
option D. It is due to the capillary motion phenomenon due to which oil upward push up the wick in a lamp. Capillary motion, or capillarity, is the capacity of a liquid to go with the drift in slim areas with out the help of, and in competition to outside forces like gravity.
