If the diameter of a capillary is doubled, then the rise of water in it will be
(A) two times
(B) half
(C) four times
(D) no change
Question Asked : SSC Section Officer (Audit) Exam 1997
Explanation : Radius of a capillary tube is inversely proportional to the height of the liquid column. So, if radius of the tube is doubled, rise of level of water will reduce to half of the previous rise in capillary tube. The capillary action is primarily because of attractive also called cohesive force interacting among particles of same type.
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Tags : Physics