A capillary tube of length l = 50 cm and radius r = $\frac{1}{4}\mathrm{mm}$ is immersed vertically into water. Find the capillary rise if angle of contact = $0^0$ and coefficient of surface tension = 72 dyne/cm. (Take g = 1000 $\mathrm{cm}/{\mathrm{s}}^2$).

• A

  30 cm

• B

  35 cm

• C

  40 cm

• D

  50 cm