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Water rises to a height of 9 cm in a cer...

Water rises to a height of 9 cm in a certain capillary tube. If in the same tube, level of Hg is depressed by 3cm compare the surface tension of water and mercury. Specific gravity of Hg is 13.6, the angle of contact for water is zero and that for Hg is `135^(@).`

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The correct Answer is:
`(0.152)`
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