Question

19. (a) The radius of a capillary tube is 0.025 mm
It is held vertically in a liquid whose density is
0.8 x 10° kg m-3, surface tension is 3.0 x 10-2 Nm
and for which the cosine of the angle of contact is 0.3.
Determine the height up to which the liquid will rise
in the tube. Take g
10 m s-2.
(b) If the capillary is taken down in water slowly until
its
upper end comes in level of water, will the water
come out from this end ?​

Answer 1

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