13.3 Images in lenses- Concave

13.3 Images in lenses- Concave

Locating images in a diverging lens

The rules for finding images in both concave and convex lenses are very similar, with the only difference between the two being that the light rays going through a diverging lens do not actually come from the principle focus (F), they only appear to.

The rules for locating images in a diverging lens are as follows:

1. A ray parallel to the principal axis is refracted as it had come through the principal focus (F)
2. A ray that appears to pass through the secondary principle focus (F') is refracted parallel to the principal axis
3. A ray through the optical centre (O) continues straight through on its path.

Images in a diverging lens

Images in a diverging lens always have the same characteristics no matter what.

The image is always: - Smaller

                                   -Upright

                                   -Virtual

                                   -On the same side of the object

For more information on images in diverging lenses, visit: 

http://www.physicsclassroom.com/class/refrn/Lesson-5/Diverging-Lenses-Object-Image-Relations

or

watch this video: https://www.youtube.com/watch?v=kNOCkTZ5fyg