Question

On performing the experiment of capillary rise on the moon, the height of liquid column inside the capillary is found to be $h^{\prime }$. If the same experiment is repeated on the earth, then the liquid is found to rise up to height $h$, then-

• A. $h^{\prime }>h$
• B. $h^{\prime }<h$
• C. $h^{\prime }\ne h$
• D. $h^{\prime }=0$

Answer 1

The correct option is A $h^{\prime }>h$

Height of liquid rise in a capillary $h$ is given by

$h=\frac{2Tcos\theta }{r\rho g}$

On moon, $g$ is less, so height is more.

So $h^{\prime }>h$