What i meant by ' the mirror reflect light?

Answer 1

it means that the light reflecs

Reflection is surprisingly poorly understood in quantum terms. This is demonstrated by the fact that a mirror moving in a vacuum reflects light back to a source at the speed c with respect to the 'rest frame' of the ('non existant') vacuum, not with respect to the moving mirror.

This indicates some of our current fundamental assumptions are wrong.

One possible logical solution is that the ion surface (plasmon) charge at all matter surfaces interacts and convert the speed to the local speed c each side of the transition zone (plasma is often a 'two part' phenomena). (The 'discrete field' model). No other solutions consistent with special relativity and QM have yet been proposed.

Answer 2

A mirror reflects light by causing the photons that make up the light to bounce off its surface in a process called specular reflection. When light waves hit the smooth surface of a mirror, they are not absorbed but instead bounce back at the same angle they hit the mirror, resulting in a clear reflection.