I am not sure if this question comes under physics.
When police men or investigators bring a few suspects they enquire them and leave them in a room with a big mirror.
The man inside the room will be able to see his reflection in the mirror but the people out side the room will be able to see the actions of the person inside the room through the mirror.
How is it possible?
When ever I see such a scene in movies i will be amazed and surprised.
I want the exact answer.