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Water rises to a height of 10 cm in a ca...

Water rises to a height of `10 cm` in a capillary tube and mercury falls to a depth of `3.42 cm` in the same capillary tube. If the density of mercury is `13.6 g//c.c.` and the angles of contact for mercury and for water are `135^@` and `0^@`, respectively, the ratio of surface tension for water and mercury is

A

`1:0.5`

B

`1:3`

C

`1:6.5`

D

`1.5:1`

Text Solution

Verified by Experts

The correct Answer is:
C
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