A barometer reads 75cm if mercury. When `2.0cm^(3)` of air at atmospheric pressure is
Channel: Doubtnut
Date: 2020-07-12

A barometer reads 75cm if mercury. When `2.0cm^(3)` of air at atmospheric pressure is introduced into space above the mercury level, the volume of this space cecones `50 cm^(3)`. find the length by which the mercury column desecds.