The liquid (mercury) meniscus in capillary tube will be convex if the angle of contact is (a) greater than 90° (b) less than 90° (c) equal to 90° (d) equal to 0°

Answer: (a). For θ > 90° (e.g. mercury on glass) cohesion exceeds adhesion; the liquid is depressed and the meniscus is convex. So the answer is (a) greater than 90°.

The liquid (mercury) meniscus in capillary tube will be convex if the… | MHT CET 2025 (5 May, Shift 2)

Q16MHT CET 2025 · 5 MAY · SHIFT 2Easy

Angle of Contact & Capillarity

The liquid (mercury) meniscus in capillary tube will be convex if the angle of contact is

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Answer: (a)

For $\theta > 90^\circ$ (e.g. mercury on glass) cohesion exceeds adhesion; the liquid is depressed and the meniscus is convex.
So the answer is (a) greater than $90^\circ$ .

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