In a capillary tube experiment, a vertical, 30 cm long capillary tube is dipped in water. The water rises up to a height of 10 cm due to capillary action. If this experiment is conducted in a freely falling elevator, the length of the water column becomes ___________

In a capillary tube experiment, a vertical, 30 cm long capillary tube

1.	In a capillary tube experiment, a vertical, 30 cm long capillary tube is dipped in water. The water rises up to a height of 10 cm due to capillary action. If this experiment is conducted in a freely falling elevator, the length of the water column becomes ___________
A.	10 cm
B.	20 cm
C.	30 cm
D.	Zero
Answer» D. Zero