When one end of a capillary tube is dipped vertically in water, the pressure below the meniscus of water is

Options

A. more than upper side pressure
B. lesser than upper side pressure
C. equal to atmospheric
D. equal to upper side pressure

Answer

B

Explanation

Water rises in the capillary tube with a concave meniscus . The meniscus is concave upwards. The pressure on the upper concave surface is the atmospheric (P) and
on the lower surface, this pressure if `P - (2T)/R`
` :.` Pressure below the lower side is less than on the upper side .