Wax is coated on the inner wall of a capillary tube and the tube is then dipped in water. Then, compared to the unwaxed capillary, the angle of contact θ and the height h upto which water rises change. These changes are:
1
θ increases and h also increases
2
θ decreases and h also decreases
3
θ increases and h decreases
4
θ decreases and increases