Three liquids of densities ₁, ₂ and ₃ (with ₁ ₂ ₃ ) having same value of surface tension T , rise to the same height in three identical capillaries. Angle of contact ₁, ₂ and ₃ respectively obey

Step-by-step solution

Rise of a liquid in a capillary tube: aligned & h = 2 ~T rg & = hr ~g 2 ~T aligned .( 0=1 is the max. value for cosine ) Here, ₁ ₂ ₃ , so ₁ ₂ ₃ The all three angles of contact should be acute. 0 ₁ ₂ ₃ 2