When a capillary tube is dipped in a liquid, the liquid rises to a height h in the tube. The free liquid surface inside the tube is hemispherical in shape. The tube is now pushed down so that the height of the tube outside the liquid is less than h.
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(c, d)
The angle of contact at the free surface inside the capillary tube will change such that the vertical
component of the surface tension forces just balance the weight of the liquid column.
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