The distance from the pencil to its image in a flat mirror was 50 cm.The pencil was moved 10 cm
The distance from the pencil to its image in a flat mirror was 50 cm.The pencil was moved 10 cm away from the mirror. What was the distance between the pencil and its image
Answer: The distance between the pencil and its image after moving it will become 60 cm.
The mirror is flat and any reflection is directly on its surface. The fact that we are observing the so-called “depth effect” is nothing more than an optical illusion. Reflection cannot be in depth at a distance equal to the distance from the object to the mirror, simply because the mirror is a plane and has no depth at all. Therefore, all distances from the object to the image are determined only by the distance from the object to the reflecting surface of the mirror. If we move the pencil 10 cm, then the distance to its image becomes:
50 + 10 = 60 cm.