If a 5 cm long capillary tube with 0.2 mm internal diameter open at both ends is slightly dipped in water having surface tension 75 dyne/cm. What will be the rise of water in capillary (Take g=1000 cm/s2)
Why this question? Tips: If length of tube < height of capillary rise, then the total rise of water in capillary will be equal to the length of the tube but angle of contact will change. |