Question
A capillary tube is placed vertically in water and water rises to height h above the surface of water in the capillary tube. If the tube is inclined with vertical at angle θ, then it rises to height t. Find t.
Solution
Given, a capillary tube is placed in water and water rises to a height h above the surface of water in the capillary tube.
The vertical height to which the liquid rises in the capillary tube remains constant as shown.
From the figure, we have
h/ t = cos θ
⇒ t = h cos [∵ cos θ < 1]
From the figure, we have
h/ t = cos θ
⇒ t = h cos [∵ cos θ < 1]
∴ t > h
