A tube in vertical plane is shown in fig...

A tube in vertical plane is shown in figure. It is filled with a liquid of density `rho` and its end `B` is closed. Then the force exerted by the fluid on the tube at end `B` will be : [Neglect atmospheric pressure and assume the radius of the tube to be negligible in comparison to `l`]

`P_(atm) A_0`

`(P_(atm)+rhogl)A_0`

`(P_(atm)+2rhogl)A_0`

`(P_(atm)+4rhogl)A_0`

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