1.

Two parallel glass plates are dipped partly in the liquid of density 'd' keeping them vertical. If the distance between the plates is 'x', surface tension for liquids is T and angle of contact is \[\theta \], then rise of liquid between the plates due to capillary will be       [NCERT 1981]

A. \[\frac{T\cos \theta }{xd}\]
B.   \[\frac{2T\cos \theta }{xdg}\]
C. \[\frac{2T}{xdg\cos \theta }\]
D.            \[\frac{T\cos \theta }{xdg}\]
Answer» C. \[\frac{2T}{xdg\cos \theta }\]


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