Mirrors

The Law of Reflection The angle of incidence EQUALS the angle of reflection

Two types of curved mirrors: Concave and Convex

Parts of a spherical mirror C: Center of curvature V: Vertex of mirror (center of mirror itself) F: Focal point (parallel rays reflected from mirror converge at this point) P: Principal axis (goes through C and F) r: Radius of curvature (distance from C to V) (r = 2f) f: Focal length (distance from F to V)

Rules of Mirror Ray Diagrams   Incident Rays Are reflected 1  Parallel to P Through F 2 Parallel to P 3 Through C Back on itself

Example 1 Image is located between _______ and ______ It is real/virtual It is upright/inverted It is reduced/enlarged/same size

Example 2 Image is located between _______ and ______ It is real/virtual It is upright/inverted It is reduced/enlarged/same size

Review Video https://www.youtube.com/watch?v=xrMvnjOgsig Start at 5:45 and end at 10:05

Lenses

Two types of lenses: Concave and Convex

Parts of a Lens O: Optical center F: Focal point F’: Virtual focal point P: Principal axis (goes through C and F)

Rules of Convex Lens Ray Diagrams   In to lens from object Out from lens 1  Parallel to P Through F 2 Through O Keep going straight

Example 1 Image is located between _______ and ______ It is real/virtual It is upright/inverted It is reduced/enlarged/same size

Rules of Concave Lens Ray Diagrams   In to lens from object Out from lens 1  Parallel to P Through F’ 2 Through O Keep going straight

Example 1 Image is located between _______ and ______ It is real/virtual It is upright/inverted It is reduced/enlarged/same size

Review Video https://www.youtube.com/watch?v=mfytZxM8lho Start at 2:45 and Stop at 5:40