1 The ratio of surface tensions of mercury and water is given to be 7...
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1 The ratio of surface tensions of mercury and water is given to be 7 5 while the ratio of their densities is 13 6 Their contact angles with glass are close to 135 and 0 respectively It is observed that mercury gets depressed by an amount h in a capillary tube of radius while water rises by the same amount h in a capillary tube of radius 2 The ratio r n is 2019 Main 10 April 1 then close to a 3 5 b 2 3 c 2 5 d 4 5
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