When a convergent beam of light is incident on a plane mirror, an image is formed. Let's discuss the image formation in detail.

Image Formation:
- A convergent beam of light is one where the light rays come together at a point after passing through a lens or other optical device.
- When this convergent beam of light is incident on a plane mirror, the light rays reflect off the mirror surface and diverge in different directions.
- However, the reflected rays appear to originate from a point behind the mirror, known as the virtual focus or the focus of the mirror.
- The distance between the mirror and the virtual focus is equal to the distance between the mirror and the object in front of it.
- The image formed by the plane mirror is virtual, meaning it cannot be projected onto a screen. It can only be seen by looking into the mirror.
- The size of the image is the same as that of the object, and it appears to be located behind the mirror at the same distance as the object is in front of it.
- The image formed by the plane mirror is laterally inverted, meaning it appears reversed from left to right.

Uses of Plane Mirrors:
- Plane mirrors have many practical applications in our daily lives. Some of the main uses of plane mirrors are:
- In mirrors used in automobiles to help drivers see what is behind them.
- In mirrors used in bathrooms and dressing rooms for personal grooming.
- In periscopes used in submarines and tanks to allow users to see around corners.
- In telescopes and microscopes to reflect light and create a magnified image.
- Plane mirrors are also used in optical experiments to study the behavior of light.

In conclusion, when a convergent beam of light is incident on a plane mirror, an image is formed that is virtual, upright, the same size as the object, and laterally inverted. Plane mirrors have many practical applications in our daily lives and are also used in optical experiments to study the behavior of light.

Real and inverted.