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A capillary tube is held vertically in w...

A capillary tube is held vertically in water . The internal radius of the tube is `(1//42)` cm . If the surface tension is 70 dyne /cm and angle of contact is zero , then rise in the capillary tube is

A

6 cm

B

4 cm

C

12 cm

D

24 cm

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The correct Answer is:
A
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