If a capillary tube of diameter 0.4 m is dipped vertically into water, then the height to which water rises in the capillary tube will be ,
If a capillary tube of diameter 0.4 m is dipped vertically into water, then the height to which water rises in the capillary tube will be ,
A. `7.143` cm
B. `0 . 013` cm
C. `714 .3` cm
D. 7143 cm s
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Correct Answer - A
` h = (2T cos theta )/(rho gr) = (2xx 7xx 10^(-2)xx1)/(10^(3)xx9.8 xx2xx10^(-4))=7.143` cm
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