In the above figure mercury columns of 1...

In the above figure mercury columns of `10 cms` each are trapped between gas columns of `10 cm` each . If `P_(atm)=75 cm` of `Hg` then the gas pressure in the topmost column will be

`55 cm` of `Hg`

`35 cm` of `Hg`

`65 cm` of `Hg`

`45 cm` of `Hg`

Text Solution

Verified by Experts

The correct Answer is:

`P_(gas)=P_(atm)-10-10`
`=75-10-10=55` cm of Hg`=248.625mL,`

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