What happens when incedent ray passes through centre of curvature of a lens c1( convex or concave) .

What happens when incedent ray passes through centre of curvature of a

1.	What happens when incedent ray passes through centre of curvature of a lens c1( convex or concave) .
Answer» I think you must read it again since ot is a lens not the mirror When incident ray passes through centre of curvature then it retraces its path in both concave and convex