The Total solution for NCERT class 6-12
The given system of water, mercury, and methylated spirit is shownas follows:
Height of the spirit column, h1 = 12.5cm = 0.125 m
Height of the water column, h2 = 10 cm= 0.1 m
P0 =Atmospheric pressure
ρ1 =Density of spirit
ρ2 =Density of water
Pressure at point B =
Pressure at point D =
Pressure at points B and D is the same.
Therefore, the specific gravity of spirit is 0.8.