Angle of Contact & Capillarity question from MHT CET 2026 (15 May, Shift 1)

Answer: (d)

1. $h = \dfrac{2T\cos\theta}{r\rho g_{\text{eff}}}$.
2. In a freely falling elevator $g_{\text{eff}} = 0$, so water feels no weight and keeps rising.
3. It climbs to the top of the tube; it does not overflow because the meniscus adjusts its radius.
4. So the length of water column is the full $20$ cm, answer (d).