Question
What is the difference between a convex lens and a concave lens?
Answer
| Characteristic | Convex Lens | Concave Lens |
|---|---|---|
| Shape | Thicker in the center, thin at the edges | Thinner in the center, thicker at the edges |
| Focal Point | Real or virtual, depending on the object’s position relative to the lens | Virtual, always on the same side as the object |
| Principal Focus | Positive focal length | Negative focal length |
| Image Formation | Forms real or virtual images, depending on the object’s position | Forms only virtual, diminished images |
