Question

A mercury barometer reads 75 cm. Now 3 cm of
atmospheric air is introduced into the tube. The
mercury falls to a height of 65 cm and the length of
air column above the mercury is found to be 15 cm.
Calculate the cross sectional area of the barometer
tube.​

Answer 1

Answer:

barometer reads 75cm if mercury. When

of air at atmospheric pressure is introduced into space above the mercury level, the volume of this space cecones

. find the length by which the mercury column desecds.

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