Illustrate with the help of a lebelled diagram of a simple barometer that the atmospheric pressure at a place is 76 cm of Hg.

What is meant by the statement “the atmospheric pressure at a place is 76 cm of Hg"? State its value in Pa.

Draw a simple labelled diagram of a Fortin barometer and state how it is used to measure the atmospheric pressure.

Explain how is the height of mercury column in the tube of a simple barometer, a measure of the atmospheric pressure.

Mercury is completely filled in a rectangular take of height 72 cm. The atmospheric pressure at the place is 72 cm. of Hg. Find the distance in cm of point of application from bottom of tank of the net force , on the inner surface of the side vertical wall of tank.

Why mercury is used in barometer for measuring atmospheric pressure?

Explain why does the mercury level in a barometer go down when atmospheric pressure decreases?

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 ?

With the help of suitable diagrams, illustrate the two types of on-ideal solutions.

As an air bubble rises from the bottom of a lake to the surface, its volume is doubled. Find the depth of the lake. Take atmospheric pressure = 76 cm of Hg.