Question

if a barometer carries water istead of mercury,then the height of the column for a pressure equivalent to 75cm of mercury would be-

Answer 1

in a barometer the comparison between two is
level of water = 13.6 times of level of mercury
level of water = 13.6× 75
= 1020cm

Answer 2

Answer:

So, the height of the column for a pressure equivalent to 75 cm of mercury would be 1020 cm

Step-by-step explanation:

Mercury is commonly used in barometers because it has high density means the height of the column can be a increased to a reasonable size to measure atmospheric pressure.

Now, the barometer is made to carry water :

Therefore, as the density of mercury is higher than water so, to obtain the same pressure difference as that of mercury, the height of column in the barometer need to be made taller.

Now, mercury is 13.6 times denser than water.

So, the height of the column for a pressure equivalent to 75 cm of mercury would be 13.6 × 75

                            = 1020 cm