Which type of lenses is?
(a) Thinner in the middle than at the edges?
(B) Thicker in the middle than at the edges?
(a) Concave lenses is Thinner in the middle than at the edges.
(b) Convex lenses is Thicker in the middle than at the edges.
3
Which type of lenses is?
(a) Thinner in the middle than at the edges?
(B) Thicker in the middle than at the edges?
(a) Concave lenses is Thinner in the middle than at the edges.
(b) Convex lenses is Thicker in the middle than at the edges.