Surface tension of two liquids (having same densities), T₁ and T₂ , are measured using capillary rise method utilizing two tubes with inner radii of r₁ and r₂ where r₁ > r₂ . The measured liquid heights in these tubes  are h₁ and h₂ respectively. [Ignore the weight of the liquid about the lowest point of miniscus]. The heights h₁ and h₂ and surface tensions T₁ and T₂ satisfy the relation :