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one end of a U-tube of uniform bore (are...

one end of a U-tube of uniform bore (area A) containing mercury is connected to a suction pump. Because of it the level of liquid of density `rho` falls in one limb. When the pump is removed, the restoring force in the other limb is:

A

`2x rhoAg`

B

`xrhog`

C

`A rhog`

D

`xrhoAg`

Text Solution

Verified by Experts

The correct Answer is:
A
Force due to excess pressure
`="Restoring force"=(rhogh)A=rhog(2x)A`
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