The meniscus of mercury in the capillary tube | vedclass

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(A) The correct answer is $A$ (Convex).The shape of the meniscus is determined by the relative strengths of cohesive forces (forces between liquid mol

Vedclass · Accepted Answer

Convex

Vedclass · Answer

(A) The correct answer is $A$ (Convex).The shape of the meniscus is determined by the relative strengths of cohesive forces (forces between liquid molecules) and adhesive forces (forces between liquid molecules and the container surface).For mercury,the cohesive forces between mercury atoms are significantly stronger than the adhesive forces between mercury atoms and the glass surface of the capillary tube.Because the cohesive forces dominate,the mercury atoms tend to pull away from the glass walls and towards each other,resulting in a convex meniscus shape.

The meniscus of mercury in the capillary tube is

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