Question

In an art gallery an artefact is placed between two parallel plane mirrors. the number of its images formed will be:
1. Two
2. Three
3. Eleven
4. Infinite

Answer 1

Correct Answer - Option 4 : Infinite

The correct answer is Infinite.

• When the object is placed between two parallel plane mirrors, Infinite images will be formed.
• Hence when in an art gallery, an artefact is placed between two parallel plane mirrors the number of its images formed will be infinite.

• A plane mirror is a mirror with a flat (planar) reflective surface.
• For light rays striking a plane mirror, the angle of reflection equals the angle of incidence.
• The angle of the incidence is the angle between the incident ray and the surface normal (an imaginary line perpendicular to the surface).
• The angle of the reflection is the angle between the reflected ray and the surface normal.