what is concavo convex lens?

1.	what is concavo convex lens?
Answer» Concavo-convex : A lens that is concave on one surface and convex on the opposite surface. The convex face has a greater degree of curvature than the concave face.These lenses are referred as convex-concave or meniscus. It is this type of lens that is most commonly used in corrective lenses.

Discussion