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Find the heights to which water will in ...

Find the heights to which water will in a capillary tube of radius 0.3mm, `sigma = 7.2 xx 10^(-2) Nm^(-1)` . What will happen if the tube is raised till the upper end is 3cm above the water surface?

Text Solution

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The correct Answer is:
0.0490m
`h = 2 sigma cos theta // r rho g = 0.0489m. R.h. = rh, R. = rh//h. = 0.3 xx 10^(-3) xx 0.0489//3 xx 10^(-2) = 0.48 xx 10^(-3) m`
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