A 20 cm long capillary tube is dipped in water. The water rises up to 8 cm. If the entire arrangement is put in a freely falling elevator, the length of water column in the capillary tube will be

In the freely falling elevator the effective g is zero .As h = $\frac{2T}{\rho g_{e}r}and g_{e }is zero ,theoretically height of water column is infinity. Since length of tube is finite ,$the water column in capillary tube will be 20 cm( full length of capillary.).