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Find the depression of the miniscus in t...

Find the depression of the miniscus in the capillary tube of diametre `0.4mm` dipped in a beaker containning mercury (density of mercury `=13.6xx10^(3)kg//m^(3)` and surface tension of the mercury is `0.49 N//m` and angle of contact is `135^(@)`).

A

`0.025cm`

B

`0.021 cm`

C

`0.020 cm`

D

`0.027 cm`

Text Solution

Verified by Experts

The correct Answer is:
A
`T=(hrdg)/(2costheta)`
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