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In a capillary tube, the liquid rises to...

In a capillary tube, the liquid rises to a height of 8cm and surface tension of liquid is 70 dyne/cm. Then the radius of capillary tube is

A

0.01785 cm

B

1.785 cm

C

17.85 cm

D

0.1785 cm

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The correct Answer is:
C
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