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9.2 , surface tension — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysics9.2 , surface tension1 Mark
MCQ
A capillary tube of radius $0.2\,cm$ is dipped vertically in a beaker containing liquid. If the liquid rises to a height of $5\,cm$ for which the angle of contact is $60^o$ , then surface tension of the liquid is ...... $dynes/cm$ $(d = 1\,gm/cm^3)$
  • A
    $49$
  • B
    $98$
  • C
    $490$
  • ✓
    $980$
✓

Answer

Correct option: D.
$980$
d

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