1. GEOMETRICAL OPTICS Laws of Reflection Curved mirrors

2. Photograph of Mount Moran in the Grand Teton National Park in Wyoming - taken by Becky Henderson Reflection from a surface Incident ray and the reflected one is in one plane The angle of reflection equals angle of incidence

4. Can you explain this picture?

5.  FIND THE FOCAL DISTANCE OF A SPHERICAL MIRROR 1) Case of the “cup”   dd R Rd   Rd  cos  f = R d  cos  d  Angle of incidence = angle of reflection

6. FIND THE FOCAL DISTANCE OF A SPHERICAL MIRROR 2) Other dimension (sphere) Reflected ray in the plane of incidence O A B D AB = AD/sin2  R sin  sin2    = R 2 cos  O A