If the angle of contact is less than `90^(@)` the pressure just inside the surface of a meniscus

If the angle of contact is 0^@ , the shape of meniscus is

The pressure just below the meniscus of water :

Why the angle of contact is zero, less than 90^@ , equal to 90^@ and greater than 90^@ .

The pressure just below the meniscus of water.......

A capillary tube of radius r is placed in a liquid I the angle of contact is theta , the radius of curvature R of the meniscus in the capillary is

A capillary tube of radius r is placed in a liquid. If the angle of contact is theta the radius of curvature R of the meniscus in the capillary is