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Sahay Sir > Question Answers > JEE Mains Physics 2002-2019 Solved Video Solutions > Chapter 7 - Properties of Solids and Liquids > 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 degree and 0 degree , respectively. It is observed that mercury gets depressed by an amount h in a capillary tube of radius r1, while water rises by the same amount h in a capillary tube of radius r2. The ratio,(r2 /r1), is then close to :

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 degree and 0 degree , respectively. It is observed that mercury gets depressed by an amount h in a capillary tube of radius r1, while water rises by the same amount h in a capillary tube of radius r2. The ratio,(r2 /r1), is then close to :

(r2 /r1) are close to 135 degree and 0 degree is then close to : respectively. It is observed that mercury gets depressed by an amount h in a capillary tube of radius r1 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 while water rises by the same amount h in a capillary tube of radius r2. The ratio with glass