Water rises in a capillary tube to a certain height such that the upward force due to surface tension is balanced by `75xx10^-4` newton force due to the weight of the liquid. If the surface tension of water is `6xx`10^-2` newton/metre the inner circumference of the capillary must be:

Options

A. ` 1.26 xx 10 ^(-2) m `
B. ` 0.50 xx 10 ^(-2) m`
C. ` 6.5 xx 10 ^(-2) m`
D. ` 0.125 `m

Answer

D