Incident Ray: The ray of light falling on the surface of a mirror is called an incident ray.
Point of Incidence: The point at which the incident ray touches the mirror surface is called the point of incidence.
Reflected Ray: The ray of light which is sent back by the mirror from the point of incidence is called a reflected ray.
Normal: A line perpendicular to the mirror surface at the point of incidence is called normal.
The angle of incidence: The angle made by the incident ray with the normal is called the angle of incidence.
Angle of Reflection: The angle made by the reflected ray with the normal at the point of incidence is called the angle of reflection.
Object: Anything that gives out light with its own reflection is called an object.
Image: When the light rays coming from an object are reflected from a mirror then a visual appearance that is produced by the mirror is called an image. Images are of two types, real images, and virtual images
Real Image: The image which can be seen on the screen is called a real image.
Virtual Image: The image which cannot be obtained on a screen is called a virtual image.
Lateral Inversion: The change of sides of an object in its mirror image is called lateral inversion. It happens due to the reflection of light. In this case, the right side of the object becomes the left side of the image and the left side of the object becomes the right side of the image.
