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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 upto $10\, cm$ height in a long capillary tube. If this tube is immersed in water so that the height above the water surface is only $8 \,cm,$  then
  • A
    Water flows out continuously from the upper end
  • ✓
    Water rises upto upper end and forms a spherical surface
  • C
    Water only rises upto $6 \,cm$ height
  • D
    Water does not rise at all
✓

Answer

Correct option: B.
Water rises upto upper end and forms a spherical surface
b
(b) $h=\frac{2 T \cos \theta}{\rho r g}$

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