$11$ a Calculate the capillary rise of a liquid $($density $=1\mathrm{.}26\frac{g}{c}c)$ expected in a $0\mathrm{.}8mm$ diameter tube. Surface tension of the liquid with air $=64m\frac{N}{m},$ contact angle made by the liquid with tube $=60.$ What will be the rise if diameter of the tube is reduced to $0\mathrm{.}5mm?$