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Water rises a height of 10 cm in a capil...

Water rises a height of 10 cm in a capillary tube. When the same capillary tube is dipped in mercury it falls to a height of 3.4cm. Compare the surface tensions of water and mercury. Assume that the specific gravity of mercury is 13.6, angle of contact of water with glass is `0^(@)` and angle of contact of water with glass is `135^(@)`.

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The correct Answer is:
0.1529
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