A berometer correctlu reads the atmospheric pressure as 76cm of mercury.
Channel: Doubtnut
Date: 28/06/2020

A berometer correctlu reads the atmospheric pressure as 76cm of mercury. Water droplets are slowly introduced into the barometer tube by a dropper. The height of the mercury column first decreases and then become constant. If the saturation vapour pressure at the atmospheric tgemperature is 0.80cm of mercury, find the height if the mercury column when it reaches its minimum value.