A capillary of the shape as shown is dipped in a liquid. Contact angle between the liquid and the capillary is 0° and effect of liquid inside the meniscus is to be neglected. T is surface tension of the liquid, r is radius of the meniscus, g is acceleration due to gravity and is density of the liquid then height h in equilibrium is:
but weight of liquid in tapered tube is more than uniform tube of radius r, then in order to balance h<