a.nikhil

when light enters black hole,is it converted into matter[mass] i've read that energy exists all over the universe and when it is denser it is called matter. i mean does it become as dense as matter or does it become as dense as the black hole itself or nothing happens?

do you mean to say that mass was converted to energy [ i have heard that energy exists all over the universe and when it is denser ,it is called matter] spreading with the speed of light..........e=mc2?

do 2dimensional particles exist? i have heard about something called strings [sub-atomic] which they say are 2d