what is the phenomenon of capillarity?derive an expression for the rise of liquid in a capillary tube
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Capillarity is a physical phenomenonin which liquids flow without the help of gravity. Liquids even rise to a height against gravity, through narrow tubes.Capillary action is due to thephenomenon of Surface tension ofliquid as well as adhesive forces between liquid molecules and molecules of the narrowtube.
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the rise or fall of a liquid in a capillary tube when inserted in a beaker is called capillarity.
capillarity depends upon the angle of contact i.e the angle made by the liquid with tube at the point of contact.
expression
h=2t/rdg.r is radius of meniscus
h=2tcos(angle of contact)/Rdg where R is radius of tube
capillarity depends upon the angle of contact i.e the angle made by the liquid with tube at the point of contact.
expression
h=2t/rdg.r is radius of meniscus
h=2tcos(angle of contact)/Rdg where R is radius of tube
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