Question

How is the barometric height of a simple barometer affected if its tube is slightly tilted from vertical?

Answer 1

Concept used:

1. A barometer is a device that measures changes in air pressure that occur above or below sea level as a function of altitude.
2. In order for a barometer to function, the mercury weight inside the glass tube must be balanced with regard to the atmospheric pressure.
3. The mercury level will rise if the mercury's weight is less than the air pressure.
4. Additionally, the mercury level will drop if the weight of the mercury is greater than the atmospheric pressure. The inch scale marked on the glass tube is used to measure the mercury's rise and fall.

Explanation:

1. Whenever the tube is slightly tilted downward from vertical, this same difference or variation in air pressure is balanced by the heaviness or load of the tube, and the barometric height of a simple barometer remains unchanged.
2. As the result, the barometric height remains unaffected.