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A liquid of density 1.742 g cm-3 is observed to show a capillary rise of 73 mm in a tube of radius 0.65 mm. Then the surface tension of the liquid is

A. 4.1 x 10-2 dynes cm-1

B. 4.1 x 103 dynes cm-1

C. 7.1 x 10-3 dynes cm-1

D. None of these

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Correct Answer : B.


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