Three liquids of densities ρ1, ρ2, and ρ3 (with ρ1 > ρ2 > ρ3), having the same value of surface tension T, rise to the same height in three identical capillaries. The angles of contact θ1, θ2, and θ3 obey,
1
π/2 > θ1 > θ2 > θ3 ≥ 0
2
0 ≤ θ3 < θ2 < θ1 < π/2
3
0 ≤ θ1 < θ2 < θ3 < π/2
4
None