Physics › Section R · Electromagnetic waves and geometric optics › Topic R.6
Image formation by lenses
Cameras, spectacles, magnifying glasses and your own eyes all form images with lenses. A few ray rules and one equation predict where every image appears, how big it is, and whether it can be caught on a screen.
In this topic
- Two kinds of lens
- Focal points and power
- Ray diagrams in words
- Real and virtual images
- The thin-lens equation and its signs
- Worked example: a real image
- Worked example: a magnifying glass
- Worked example: a diverging lens
- Where the image goes
- Common mistakes to avoid
- Key takeaways
This topic is part of Wuanberri Pro. Checking your access…