A capillary tube made of glass of radius 0.15 mm is dipped vertically in a beaker filled with methylene iodide (surface tension $=0.05 \mathrm{Nm}-1$, density = $667 \mathrm{~kg} \mathrm{~m}^{-3}$ ) which rises to height h in the tube. It is observed that the two tangents drawn from liquid-glass interfaces (from opp. sides of the capillary) make an angle of $60^{\circ}$ with one another. Then h is close to $\left(\mathrm{g}=10 \mathrm{~ms}^{-2}\right)$