A long capillary tube of radius 1 mm, open at both ends is filled with water and placed vertically. What will be the height of water column left in the capillary ? (Surface tension of water is 73.5 x 10-3 Nm-1)

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0.3cm

3cm

6cm

0.03 cm

answer is B.

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Detailed Solution

πr2hdg=2×2πrTcos⁡θ⇒h=4Trdg

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