If the light approaches the mirror along the normal than it will reflect back in the same direction because both the angle of incidence and reflection are same because both of them lie in the 0 degree. That's what i meant.
Anshita Rajput answered this
thank you for answer
Diya Koul answered this
it will reflect back in same direction
Vikas answered this
If all object around we're to reflect light in a regular way what problem might we face