In a capillary tube experiment, a capillary tube made of glass of radius 0.1m is dipped vertically in a beaker filled with methylene iodine, which rises to height h in the tube.  It is observed that the two tangents drawn from liquid glass interfaces (from opposite sides of the capillary) make an angle of ${60}^0$ with one another.  Then, h is to (given, surface tension $=0.05{\text{Nm}}^{-1}$ , density = 866 ${\text{kg\hspace{0.17em}m}}^{-3}$ and  ${\text{g = 10\hspace{0.17em}\hspace{0.17em}ms}}^{-2})$