Image Formation by Spherical Mirrors

Guidelines for Rays Falling on the Concave and Convex Mirrors

1. When a ray strikes concave or convex mirrors obliquely at its pole, it is reflected obliquely.
2. When a ray, parallel to principal axis strikes concave or convex mirrors, the reflected ray passes through the focus on the principal axis.
3. When a ray, passing through focus strikes concave or convex mirrors, the reflected ray will pass parallel to the principal axis.
4. A ray passing through the center of curvature of the spherical mirror will retrace its path after reflection.