A glass tube of small diameter (d) is dipped in fluid. The height of rise or fal

Question

A glass tube of small diameter (d) is dipped in fluid. The height of rise or fall in the tube given by (where w = Specific weight of liquid, α = Angle of contact of the liquid surface, and σ = Surface tension)

Options:

A . 4wd/σ cosα

B . σ cosα/4wd

C . 4σ cosα/wd

D . wd/4σ cosα

Answer: Option C

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