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)

A barometer tube is inclined at an angle of 30^@ with horizontal direction. Calculate length of mercury column in tube if atmospheric pressure is 76 cm of mercury.

The length of a faulty barometer is 90 cm and there is a little air above the mercury. When the atmospheric pressure is 76cm of Hg it reads 74.8 cm. What will be the true atmospheric pressure if the reading on the barometer is 74.3cm ?

An ideal gas is trapped between a mercury column and the closed-end of a narrow vertical tube of uniform base containing the column. The upper end of the tube is open to the atmosphere. the atmospheric pressure equals 76cm of mercury. The lengths of the mercury column and trapped air column are 20 cm and 43 cm respectively. What will be the length of the air column when the tube is tilted slowly in a vertical plane through an angle of 60^(@) ? Assume the temperature to remain constant.

Calculate the length of mercury column in a barometer tube which is inclined at an angle of 45^(@) with horizontal direction if the atmospheric pressure is 75 cm of mercury.

A faulty barometer tube is 90cm long and its contains some air above mercury. The reading is cm when the true atmospheric pressure 76cm . What will be the true atmospheric pressure if the reading on this barometer is 74 cm? (H = 10cm of water column)