Pressure difference between two points in vessels, pipelines or in two different pipelines can be measured by a differential manometer. The pressure difference measured as the mm of water column in case of mercury-water, differential manometer is equal to (where, H = difference in height of mercury column in mm)?
Correct answer: A
Explanation
The pressure difference measured by a differential manometer using mercury-water is directly equal to the height difference of the mercury column (H).