1.  Show how images are formed by diverging lenses

2.  There are two main types of lenses: convex lenses—these curve outwards and are fatter in the middle concave lenses—these curve inwards (a little like a cave) and are thinner in the middle. Convex lenses Concave Lenses

4.  There are 2 basic types of lenses A converging lens (Convex) takes light rays and bring them to a point. A diverging lens (concave) takes light rays and spreads them outward.

5.  Concave lens is thinner in the center than at the edges.  Light is refracted away from the center of the lens.  The light rays will never meet on the other side of the lens.

7. Concave Lenses Lenses that are thicker at the edges and thinner in the center.Lenses that are thicker at the edges and thinner in the center. –Diverges light rays –All images are erect and reduced. The De-Magnifier

8. Image by concave lens 8

9. Concave Lenses Concave lenses produce only virtual images.Concave lenses produce only virtual images.

10. Sample Example question Convex lenses a. Diverge light b. Converge light c. Reflect light d. Separate light into colors

11.  Did you see how the images formed by lenses  Can you determine the focal point and the focal length.  Can you differentiate between the concave and convex lenses  Can you describe the properties of the images that are formed by lenses

12.  Write what you understood in the class in your notebook.