Let's assume your ray lines are drawn quite freely, some are too far away and some are too near the circle center. Drag all starting from the interior of the circle. Don't do it one by one, use effect Distort & Transform > Pucker & Bloat

It's useful in the very beginning copy the circle to the clipboard (you need a copy) and lock the circle to keep it in safe
You can fix the effect (=make the lines again to editable curves) by applying Object > Expand appearance
Now paste in place the circle copy and give to it black fill, scale it to the wanted distance size. Use it as opacity mask for the lines:

As well you can select the lines and the scaled circle and then split all with Pathfinder panel function Outline. You lose all colors and stroke widths, you must put them back manually. Then you must manually delete the unwanted splinters. That's destructive edit. I recommend opacity mask because it can be released and edited. Cipping masks have the same property.
The rays are probably too long now. You can resize or split them manually or insert a clipping mask. Clipping mask can be a compound path and at the same time do the job of the scaled circle, no opacity mask is needed.
Resizing manually is possible in isolation mode. Double-click a ray and drag its bounding box corner, hold Shift at the same time to keep the direction unchanged:

Leave isolation mode with Esc key.
BTW. It's no need to mess with the pucker effect, if you resize the rays one by one. You can as well drag both corners. It was suggested actually in the fist comment you have got.