A vessel, whose bottom has round holes with diameter 0.1 mm, is filled with water. The maximum height up to which water can be filled without leakage is

For equilibrium, Total upward force by surface tension = Weight of the water in tube.  p × (0.01) × 75 × 10-3=π×0.0122×h×1×10−3×1000⇒h=0.75×0.01×40.01×0.01 = 30 cm