Class 11 Physics Fluids

But in different liquids pressure is not same at same heights

Here, from pascal’s law pressure at height ‘h’ is same for any liquid.

So, here pressure at right column,
Pr = ρ* g*l where ρ= density
Pr= 3gl

Pressure at left column, Pl = ρ*g*l
Pl = 1gl = gl

So, liquid A will rise and liquid at base will also rise to height h, suppose.

So Final pressure in left column,
Pl = 2*g*h + 1*g*(h+l)
Pl = 3gh + gl

Now, Pl = Pr
so, 3gh + gl = 3gl
3gh = 2gl
h = 2l/ 3

So, Liquid A will rise for another 0.66l and liquid of base will take place there.