Imagine we put two glass tubes in a container bulged with mercury. These tubes have 2 radii which we call them : 1.Big 2.Small The height of mercury column in the big one is more than the small one. And the opposite happpens in a water container.
Why is that? MY THOUGHTS: So with water it makes sense . Since water molecules stick to glass ones ,(due to overcoming force of adhesion over cohesion ) water goes up till the mass of liquid is to heavy and be pulled down which it can be concluded smaller radius would has water raised more . Now although mercury has cohesion of its molecules overcomed its adhesion but it should not make any difference when it come to going up more in smaller tubes in terms of radius BUT it do.