which lenses are convex? check all that apply. 1 2 3 4 5 6

which lenses are convex? check all that apply. 1 2 3 4 5 6
Answer
Brief Explanations:
A convex lens is thicker at the center than at the edges. By observing the shapes, lenses 1, 2, 3, and 6 have this characteristic.
Answer:
- 1
- 2
- 3
- 6