Atmospheric pressure at sea level is ___ cm of the mercury column.

Open in App

Solution

At sea level, the atmospheric pressure is 76 cm of Hg. The air pressure falls by 10mm of Hg per 120m of ascent.

Suggest Corrections

Similar questions

Q. What is the standard level of the mercury column for 1 atmospheric pressure?

The magnitude of atmospheric pressure is equal to the pressure exerted by a :
(a)76 mm tall column of mercury
(b) 760 mm tall column of alcohol
(c) 76 cm tall column of mercury
(d)760 cm tall column of mercury

A barometer reads 75 cm of mercury. When 2.0cm $^{3}$ of air at atmospheric pressure is introduced into space above the mercury level, the volume of the space becomes 50cm $^{3}$ . The length by which the mercury column descends is

Q. A faulty barometer contains certain amount of air and saturated water vapour. It reads 74.0 cm when the atmospheric pressure is 76.0 cm of mercury and reads 72.10 cm when the atmospheric pressure is 74.0 cm of mercury. Saturation vapour pressure at the air temperature = 1.0 cm of mercury. Find the length of the barometer tube above the mercury level in the reservoir.

At sea level, the average atmospheric pressure is equal to 76 cm of Hg.

Join BYJU'S Learning Program