Two liquid columns of same height 
and densities 
and 
are filled in a container of uniform cross -sectional area. Then ratio of force exerted by the liquid on upper half of the wall to lower half of the wall is
Text Solution
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The net force exerted on the wall by one type of liquid will be average value of pressure due to that liquid multiplied by the area of the wall.
Here, since the pressure due a liquid of uniform density varies linearly with depth, its average will be just the mean value of pressure at the top and pressure at the bottom. So,
So,
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