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This question belongs to Mechanical Engineering Hydraulics And Fluid Mechanics In ME

Hydraulics and Fluid Mechanics in ME

?

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, $$\alpha $$ = Angle of contact of the liquid surface and $$\sigma $$ = Surface tension)

A) $$\frac{{4{\text{wd}}}}{{\sigma \cos \alpha }}$$ B) $$\frac{{\sigma \cos \alpha }}{{4{\text{wd}}}}$$ C) $$\frac{{4\sigma \cos \alpha }}{{{\text{wd}}}}$$ D) $$\frac{{{\text{wd}}}}{{4\sigma \cos \alpha }}$$

Answer & Solution

Correct Answer: Option C

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