Light
Mirror:
A mirror is an optically opaque material which forms the images by the phenomenon of reflection of light.
Depending upon the it’s surface, mirrors are generally two in types
1.plane mirrors 2.curved mirrors
Real Image:
The point at which the reflected rays of light actually meet or appear to meet is called an image.
1. When the rays of light actually meet, the image so formed is know as real image.
2. A real image can be caught on a screen since it is formed by actual meeting of rays.
3. A real image is always inverted.
4. A real image is formed by a convergent reflected beam.
5. In ray diagrams, for real image, the rays are represented by full lines.
Virtual image:
1. When the rays of light appear to start from a point, the image (point) so formed is known as virtual image.
2. A virtual image cannot be caught on a screen since it is formed by tracing back of imaginary rays.
3. A virtual image is always erect.
4. A virtual image is formed by a divergent reflected beam.
5. In ray diagrams, for virtual image, the rays are generally represented by dotted lines.