A vertical capillary tube is brought in contact with the water surface (coefficient of surface tension T). The radius of the capillary is r and the angle of contact 0∘ is . If ρ is the density of water, the increase in the potential energy of the water due to capillary rise is
How does the surface tension of a liquid vary with an increase in temperature?
(a) Remains same (b) Decreases
(c) Increases (d) No regular pattern is followed