Test Academy | Water rises to a height of 10cm in a capillary tube and mercury falls to a depth of 3.5cm in the same capillary tube. If the density of mercury is 13.6 gm/cc and its angle of contact is 135° and density of water is 1 gm/cc and its angle of contact is 0° , then the ratio of surface tensions of the two liquids is (cos135° = 0.7) 1:14, 5:34, 1:5, 5:27

Question

Water rises to a height of 10cm in a capillary tube and mercury falls to a depth of 3.5cm in the same capillary tube. If the density of mercury is 13.6 gm/cc and its angle of contact is 135° and density of water is 1 gm/cc and its angle of contact is 0° , then the ratio of surface tensions of the two liquids is (cos135° = 0.7)

Options :

1:14
5:34
1:5
5:27

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