This document describes two types of lenses. A converging lens is thicker in the center and thinner at the edges. It forms real or virtual images depending on the object's position and brings light rays together. A diverging lens is thicker at the edges and thinner in the center. It forms upright and reduced images and causes light rays to spread out after passing through the lens. Both lenses are used to refract light in different ways.

11. TYPES
OF
LENSES

12. - IT IS THICKER IN THE CENTER THAN THE
EDGES
- IT FORMS REAL IMAGES AND VIRTUAL
IMAGES,DEPENDING ON THE POSITION OF
THE OBJECT
- ALSO CALLED CONVERGING LENS,LIGHT

13. - IT IS THICKER IN THE EDGES AND THINNER IN
THE CENTER
- IT FORMS UPRIGHT AND REDUCED IMAGES
- ALSO CALLED DIVERGING LENS,LIGHT TENDS
TO DIVERGE AFTER PASSING THE LENS.