Question

why the light come first and then sound when we lit up crackers.

Answer 1

becoz light faster than sound      light speed is   299 792 458 m / s
and speed of sound is 343 m / s

Answer 2

Hey


In case when we lit up crackers then light comes first following sound comes. This is because the speed of light much more higher than that of sound. So , it reaches early and we see sparkle and then we hear sound .


thanks :)