What happens when a ray of light passes through the optical centre of a lens?
A light ray passing through the optic centre of a convex lens will pass through ___ after refraction.
Parallel light rays appear to pass through _________ after refraction from concave lens
The images seen through a peep hole are different from those seen through normal holes, because these peep holes contain concave lenses. What happens when light rays are incident on a concave lens?