Question

write Capillary fall
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Answer 1

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Consider a capillary tube dipped in a liquid which does not wet the surface, for example, in mercury. The shape of mercury meniscus in the capillary is upper convex. Consider the points A, B, C, and D

i) Point A is just above the convex surface and inside the capillary.

ii) Point B is just below the convex surface inside the capillary.

iii) Point C is just above the plane surface outside the capillary.

iv) Point D is just below the plane surface and outside the capillary, and below the point C.

Answer 2

Answer:

The rise and fall of a liquid surface in a small thin tube, when it is immersed vertically in a liquid is called capillarity (capillary action). The rise of the liquid surface in the tube is called as capillary rise and the fall of the liquid surface is called as capillary depression

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