Rules
Cards (4)
- Rule no. 1A ray passing through the center of curvature is reflected along itself
- Rule no. 2A ray parallel to the optical axis is reflected through the principal focus, as in the case of convergent mirrors; or when extended, it appears to come from the principal focus, as in the case of divergent mirrors. Broken lines are used to indicate an extended ray
- Rule no. 3A ray passing through the focus (or which when extended passes through the focus) is reflected parallel to the optical axis.
- Rule no. 4A ray striking the vertex of the mirror is reflected at an equal angle on the opposite side of the optical axis.