Question

as we know that black colour absorb light and never reflect back, so how can we are able to see any black colour object when light falls on it ??

Answer 1

Black objects aren’t really black; they’re just very dark. If we learn to truly look at a black object like, say, a USB cable, we’ll see a shiny white streak on the round cord where it’s reflecting light, we’ll see a slightly less-black area on the top with a more-black area on the side, and so on. Our brain finds the darkest object in the room and tends to say “that’s black,” even though the object is sending some light back toward our eye.