Question

Why the nib of pountain pen is split?​

Answer 1

$\huge\sf{Capillary\:action..!!}$

This is an application of: Capillary action

We know that:

$\bullet$ The tip of the nib of a pen is split.

$\bullet$ So in order to provide a capillary.

$\bullet$ This capillary helps the ink to rise to the end of the nib.

$\bullet$ This enables it to write continuously.

Note: A fountain pain works on the principle of atmospheric pressure.

Answer 2

It is to produce capillarity action in the refill of pen or YOU can say to provide path for the ink to come out from the pen and so that we can write ;)