Question

State the condition at which angle of contact
is obtuse for a given shape of liquid drop on
Solid Surface ?​

Answer 1

Answer:

If θ is obtuse, i.e; θ >90°, then liquid meniscus will be convex upwards. If angle of contact is acute angle, i.e; θ <90°, then liquid will wet the surface. If angle of contact is obtuse angle, ie; θ > 90°, then liquid will not wet the surface.

Answer 2

Answer:

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