The liquid rises in capillary tube when the angle of contact is
i) obtuse angle
ii) acute angle
iii) $\frac{\pi}{2}$ radian
iv) $\pi$ radian.
The liquid rises in capillary tube when the angle of contact is
i) obtuse angle
ii) acute angle
iii) $\frac{\pi}{2}$ radian
iv) $\pi$ radian.

Correct option is ii) acute angle
Liquid rises in a capillary tube if the angle of contact is acute, but liquid falls in a capillary tube if the angle of contact is obtuse