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In the previous question Air is trapped in the space (labelled A) above the mercury level in the tube of a barometer, which measures 750 mm Hg. If the atmospheric pressure is 760 mm Hg, then the pressure of the trapped air is

In the previous question Air is trapped in the space (labelled A) above the mercury level in the tube of a barometer, which measures 750 mm Hg. If the atmospheric pressure is 760 mm Hg, then the pressure of the trapped air is Correct Answer 15 mm Hg

Pressure of trapped air + Pressure of mercury column = Atmospheric Pressure.

Related Questions

Consider the following statements.
1. SI unit of atmospheric pressure is Nm-2 or pascal and CGS unit is dyne/cm2.
2. The barometer is a device by which the atmospheric pressure is measured.
3. The standard atmospheric pressure is the pressure required of 76 cm of Hg column or 760 mm of Hg column, which is equivalent to 1 atm.
Which of the statements given above is/are correct?
What will be the length of a mercury column in a barometer tube, when the atmospheric pressure is 75cm of mercury and the tube is inclined at an angle of 60° with the horizontal direction?
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