1.

Water rises in a capillary tube upto a height of 10 cm whereas mercury depresses in it by 3.42 cm. If the angle of contact and density of mercury are 135° and 13.6 gm/cc respectively, then the ratio of the surface tension of water and mercury will be nearly

Answer»

`13:2`
`5:16`
`16:5`
`2:13`

ANSWER :D


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