Question

Due to capillary action, a liquid will rise in a tube, if the angle of contact is

• A. Acute
• B. Obtuse
• C. ${90}^{\circ }$
• D. Zero

Answer 1

The correct option is A

Acute

$h=\frac{2Tcos\theta }{rdg}$. If $\theta$ is less than ${90}^{\circ }$ then h will be positive