What is the difference between a convex lens and a concave lens?
|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|