Question bank/JEE Main/Physics

A vertical capillary tube with inner radius 0.5 mm, is submerged
into water so that the length of its part above the water surface is h =
25 mm. Radius of curvature of meniscuses formed is
[IMAGE]. Here α is an integer. Find α. (surface
tension of water = 0.075 N/m. Density of water
[IMAGE], angle of contact = 0°)
0.5 mm vkUrfjd f=,d ikuh esa bl çdkj Mwch
gqbZ gS fd ikuh dh lrg ds blds Hkkx dh yEckbZ h = 25 mm gSA;gk¡α,d iw.kkZad gSAα dk eku Kkr dhft,A (ikuh dk i`"B ruko = 0.075
N/m, ty

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Source: Grass-G / Ph-27 Physics paper 2 15 Jan.docx