At the middle of the mercury barometer tube there is a little column of air with the length `l_(0)`
Channel: Doubtnut
Date: 2020-01-26

At the middle of the mercury barometer tube there is a little column of air with the length `l_(0)` and there is vacuum at the top as shown. Under the normal atmospheric pressure and the temperature of `200` le,vom/ `l_(0)=10cm`. What will be the length of the air column if the temperature rises to `330` kelvin? (Neglict expansion of the tube)