Question
An incompressible liquid is kept in a container having a weightless piston with a hole. A capillary tube of inner radius 0 . 1   mm is dipped vertically into the liquid through the airtight piston hole, as shown in the figure. The air in the container is isothermally compressed from its original volume V 0 to 100 101 V 0 with the movable piston. Considering air as an ideal gas, the height h of the liquid column in the capillary above the liquid level in cm is _____. [Given: Surface tension of the liquid is 0 . 075   N   m − 1 , atmospheric pressure is 10 5   N   m − 2 , acceleration due to gravity g is 10   m   s − 2 , density of the liquid is 10 3   kg   m − 3 and contact angle of capillary surface with the liquid is zero]