Three liquids of densities ρ_1, ρ_2 and ρ_3 (with ρ_1 ρ_2 ρ_3), having the same value of surface tension T, rise to the same height in three identical capillaries. The angles of contact θ_1, θ_2…

Question

Three liquids of densities ρ_1, ρ_2 and ρ_3 (with ρ_1 > ρ_2 > ρ_3), having the same value of surface tension T, rise to the same height in three identical capillaries. The angles of contact θ_1, θ_2 and θ_3 obey

Accepted Answer

Correct answer: C. (c) h = 2 T c o s θρ g r c o s θ_1ρ_1= c o s θ_2ρ_2= c o s θ_3ρ_3 cosθ_1 > cosθ_2 > cosθ_3 as ρ_1 > ρ_2 > ρ_3 0 ≤ θ_1 < θ_2 < θ_3 < π/2

$Three liquids of densities ρ_{1}, ρ_{2} and ρ_{3} (with ρ_{1} > ρ_{2} > ρ_{3}), having the same value of surface tension T, rise to the same height in three identical capillaries. The angles of contact θ_{1}, θ_{2} and θ_{3} obey$

Solution

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