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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

`1:125`

B

`1:136`

C

`136:1`

D

`125:1`

Text Solution

Verified by Experts

The correct Answer is:
C
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