Question

In a concavo convex lens which is the concave side and which is the convex side , also in a convexo concave lens which is the concave side and which is the convex side? Can you suggest a way so that i can remember it ?

Answer 1

The term that comes first has the greater radius of curvature.

The final term can help you remember which type of lens it behaves like.

convexo-concave lenses are diverging lenses, like concave lenses

concavo-convex lenses are converging lenses, like convex lenses

Answer 2

Ohhh,,,,okay ! thanks a lot ! :)