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9.2 , surface tension — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysics9.2 , surface tension1 Mark
MCQ
Water rises to a height of $16.3 \,cm$ in a capillary of height $18 \,cm$ above the water level. If the tube is cut at a height of $12\, cm$
  • A
    Water will come as a fountain from the capillary tube
  • ✓
    Water will stay at a height of $12 \,cm$ in the capillary tube
  • C
    The height of the water in the capillary will be $10.3\, cm$
  • D
    Water will flow down the sides of the capillary tube
✓

Answer

Correct option: B.
Water will stay at a height of $12 \,cm$ in the capillary tube
b
(b) Because if the length available is less than required, then water will rise upto available height and adjust its radius of curvature.

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