Question

In case of angal of contact is obtuse the free surface of liquid in capillary tube is

Answer 1

Explanation:

When the liquid surface is curved concave upwards, the angle of contact is acute and when the liquid surface is curved convex upwards, the angle of contact is obtuse

Answer 2

the angle of contact is acute and when the liquid surface is curved convex upwards, the angle of contact is obtuse.