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A liquid is containe in a vertical tube ...

A liquid is containe 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

A

`2:pi`

B

`1:pi`

C

`3:pi`

D

`2.7:pi`

Text Solution

Verified by Experts

The correct Answer is:
A
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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