Water rises to a height of 10 cm in a certain capillary tube. Another identical tube when dipped in mercury, the level of mercury is depressed by 3.42 cm. Density of mercury is 13.6 gm/cm3. The angle of contact for water in contact with glass is 0∘ and mercury in contact with glass is 135∘. Then the ratio of surface tension of water to that of mercury is:
(use 0.0342√2=0.024)