A liquid rises to a height of 50cm in a capillary tube of diameter 0.04mm. if density of a liquid is 0.08×103kg/m2, angle of contact is 20degrees, the surface tension of the liquid is :
A
4.17N/m
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B
0.417N/m
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C
4.17×10−2N/m
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D
4.17×10−3N/m
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