A satellite revolve around the earth . Air pressure inside the satellite nis maintain at 76mm of Hg. The height of the mercury column in the barometer tube of one meter length in the satellite is ?

As g in space is zero ,The mercury column will behave as a weightless body so we cannot determine the height.
however since the satellite is is maintaining constant pressure means the satellite is in free fall due to which no change will be observed in the barometer.