![Diagram of parallel light rays hitting a concave mirror.](http://static.sciencelearn.org.nz/images/images/000/000/047/full/Concave-mirror.jpg?1674163621)
When parallel light rays hit a concave mirror they reflect inwards towards a focal point (F). Each individual ray is still reflecting at the same angle as it hits that small part of the surface.
When parallel light rays hit a concave mirror they reflect inwards towards a focal point (F). Each individual ray is still reflecting at the same angle as it hits that small part of the surface.