Three liquids of densities (with ), having the same value of surface tension T, rise to the same height in three identical capillaries. The angles of contact obey:
1. | \(\frac{\pi}{2}>\theta_1>\theta_2>\theta_3 \geq 0\) |
2. | \(0 \leq \theta_1<\theta_2<\theta_3<\frac{\pi}{2}\) |
3. | \(\frac{\pi}{2}<\theta_1<\theta_2<\theta_3<\pi\) |
4. | \(\pi>\theta_1>\theta_2>\theta_3>\frac{\pi}{2}\) |