Fluid MechanicsMedium
Question
To measure the atmospheric pressure, four different tubes of length 1m, 2m, 3m and 4m are used. If the height of the mercury column in the tubes is h1, h2, h3, h4 respectively in the four cases, then h1 : h2 : h3 : h4 is
Options
A.1 : 2 : 3 : 4
B.4 : 3 : 2 : 1
C.1 : 2 : 2 : 1
D.1 : 1 : 1 : 1
Solution
To measure the atmospheric pressure, same length of tubes containing mercury are required, no matter how many tubes are used.
(Since Patm = ρHg g h)
(Since Patm = ρHg g h)
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