When a closed-ended manometer is used for pressure measurements, and the closed end is under vacuum, the level of manometer liquid in the closed arm can never be lower than that in the other arm.

Question

Quizplus · Accepted Answer

This is because in a closed-ended manometer, the pressure in the closed arm is always lower than the pressure in the open arm. Thus, the liquid in the closed arm will be pushed up to a higher level to balance the difference in pressure. It cannot be lower than the level in the open arm.

When a Closed-Ended Manometer Is Used for Pressure Measurements, and the Closed