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;Explain the phenomenon of capillarity. Derive an expression for the rise of liquid in a capillary tube.

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due to difference in pressure inside and outside the capillary tube capillary action takes place. which can be calculated as rise of liquid in capillary tube ( h ) = 2 x surface tension x cosine angle between the two surface / ...
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due to difference in pressure inside and outside the capillary tube capillary action takes place. which can be calculated as

 

     rise of liquid in capillary tube ( h ) = 2 x surface tension x cosine angle between the two surface /                                                                    density of liquid x g x radius of capillary tube

 

               h =  2 T / r g rho

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