A liquid is contain in a vertical tube o...

A liquid is contain in a vertical tube of semicircular cross section figure. The contact angle is zero. The force of surface tension on the curved part and on the flat part are in ratio

`2:pi`

`1:pi`

`3:pi`

`2.7:pi`

Text Solution

Verified by Experts

The correct Answer is:

Effective length of flat that `=2r`
Effective length of curved part is `pir`.
`F=sigmal`
So required ratio is `2:pi`

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