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General
Easy
Question
A closed vessel is half filled with water. There is a hole near the top of the vessel and air is pumped out from this hole.
- The water level will rise up in the level
- The pressure at the surface of the water will decrease
- The force by the water on the bottom of the vessel will decrease
- The density of the liquid will decrease
The correct answer is: The pressure at the surface of the water will decrease
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