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An open capillary tube is lowered in vessel with mercury. The difference between the levels of the mecury in the vessel and in the capillary tube `/_h=4.6 mm`. What is the radius of curvature of the mercury meniscus in the capillary tube? Surface tension of mercury is `0.46N//m`, density of mercury is `13.6gm//"cc"`.A. `1/340m`B. `1/680m`C. `1/1020m`D. information insufficient |
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Answer» Correct Answer - B `/_h=(2Scostheta)/(rrhog)=(2S)/(Rrhog)impliesR=(2S)/(/_hrhog)` |
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