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f the surface tension of water is ` 7 xx 10^(-2)` N/m then the rise of water is ` 7 xx 10^(-2)` N/m then the rise of water in a capillary tube of diameter 0.35 mm will be
A. 4 cm
B. 2 cm
C. 8 cm
D. ` 3.5 ` cm

1 Answer

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Best answer
Correct Answer - C
` h = (2Tcostheta)/(rhogr) = (2xx7xx10^(-2)xx1 xx2 )/(10^(3) xx10xx35xx10^(-5))`
= 0.08 m = 8 cm

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