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Water rises up in a glass capillary upto...

Water rises up in a glass capillary upto a height of `9.0cm`, while mercury falls down by `3.4 cm` in the same capillary. Assume angles of contact for water glass and mercury glass `0^(@)` and `135^(@)` respectively. Determine the ratio of surface tension of mercury and water `(cos 135^(@)=-0.71)`.

A

`13:2`

B

`5:16`

C

`16:5`

D

`2:13`

Text Solution

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The correct Answer is:
D
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