if a covex lens is cut horizontally from the middle what will happen to its focal length?also consider the case of a concave lens.
If a convex lens is cut horizontally from optical axis i.e., from middle, then radii of curvature on both sides of the lens i.e., R1 and R2 will remain same as before.
As focal length is given by formula :-
( By Lens Maker formula )
As R1 and R2 do not change, so there will be no change in focal length of the lens.
As focal length is given by formula :-
( By Lens Maker formula )
As R1 and R2 do not change, so there will be no change in focal length of the lens.