Question

Liquid will rise in capillary tube if angle of contact is

• A. acute
• B. obtuse
• C. equal to $90^{\circ}$
• D. always

Answer 1

Answer: (A)

acute

Answer 2

If the angle of contact $\theta$ is acute (i.e., $\theta \,90^{\circ})$, liquid will fall in a capillary tube