Question

A long capillary tube of radius 1 mm, open at both ends is filled with water and placed ver vertically. The height of water column left in the capillary tube is (surface tension of water is , )

Answer 1

Answer:

Remaining weight water = force due to surface tension.

πr

2

hρg=2×2πrcosθ

h=0.03 m= 3 cm

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