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A capillary tube of diameter 0.4 mm is d...

A capillary tube of diameter 0.4 mm is dipped in a beaker containing mercury of density 13.6x10 3 kgm −3 and surface tension 0.49Nm −1 .The angle of contact of mercury w.r.t. glass is 130 o . [Cos 130 o = -0.64280]. The depression of the meniscus in the capillary tube is (g = 9.8 ms −2 ).

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