Question

why is the voice of women and children shriller than those of men ?​

Answer 1

The vocal cords' vibration makes sound, just like a strummed guitar does. And like guitar strings, smaller cords create a higher sound.

Answer 2

$\begin{gathered} \\ \small{\bf{\pink{\underline{why \: voice \:of \: women , \: children \: shriller \: than \: men ?\::}}}} \\ \end{gathered}$

Women have shorter vocal cords which vibrate more quickly and produce a higher pitch, while in men the longer vocal cords vibrate with low frequencies giving them deeper voice. Thus, women have high-pitched or shriller voice as compared to men.

Hope this helps you dear ;) @StylusMrVirus