Question

A liquid filled in a capillary tube has convex meniscus. If Fa is force of adhesion,
Fc is force of cohesion and θ = angle of contact, which of the following
relations should hold good?
(a) Fa > Fc sinθ; (b) Fa < Fc sinθ; (c) Fa cosθ = Fc; (d) Fa sinθ > Fc

Answer 1

Answer:

I haven't learn about this type of question

Answer 2

Option B: Fa < Fc sinθ, is correct relation for capillary tube in convex miniscus.

Explanation:

1. Capillary tube having convex miniscus, has cohesive force greater than adhesive force.
2. This causes shape of liquid to convert into drop.
3. Thus giving convex miniscus. Example for the convex miniscus is Mercury.