Questions
A drop of liquid of density is floating half-immersed in a liquid of density d. If is the surface tension, the diameter of the drop of the liquid is
detailed solution
Correct option is D
2πrσ+12×43πr3dg=43πr3ρgor 2πrσ=πr3g3[4ρ−2d] or r2=3×2πσπg(4ρ−2d)or r2=3σg(2ρ−d) or r=3σg(2ρ−d) Diameter =2r=12σg(2ρ−d)Talk to our academic expert!
Similar Questions
Two capillary tubes of same diameter are put vertically in each of two liquids. Whose relative densities are 0.8 and 0.6 and surface tensions are 60 and 50 dyne/cm respectively. Ratio of heights of liquids in two tubes are . Find k. (Contact angles for both capillary is same)
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