1.

Water rises to a height of 10 cm in a capillary tube and mercury falls to a depth of 3.5 cm in the same capillary tube. If the density of the mercury is 13.6 gm/cc. and its angle of contact is 135^(@) and density of water is 1 gm/cc. and its angle of contact is 0^(@), then the ratio of surface tension of the two liquids is (cos 135^(@)=0.7).

Answer»

`1:14`
`1:5`
`5:34`
`5:27`

ANSWER :C


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