Can a Liquid Column Exist Above a Hole When Pressure Drops from 2Patm to Patm?

[zorro]

Homework Statement

This question is a product of my own mind-

Refer Figure.
Suppose the value of P= 2Patm, can 2P_atm fall to P_atm before the liquid levels with the hole-level? In other words, can there be a liquid column above the hole?

 

[rl.bhat]

Homework Statement

This question is a product of my own mind-

Refer Figure.
Suppose the value of P= 2Patm, can 2P_atm fall to P_atm before the liquid levels with the hole-level? In other words, can there be a liquid column above the hole?

It is possible. When the volume of the space above the liquid doubles, pressure becomes P_atm.. Still there is a water column above the hole. As the water drains, pressure above the water decreases below P_atm. At one level above the hole, the sum of the pressure due to the water level above the hole and pressure in the space above the water may become equal to P_atm.

 

[zorro]

Thanks!