Light, Mirrors, Light, Mirrors, and Lenses and Lenses O 4.2 Reflection and O 4.2 Reflection and Mirrors Mirrors
Dec 27, 2015
Light, Mirrors, and Light, Mirrors, and LensesLenses
O 4.2 Reflection and MirrorsO 4.2 Reflection and Mirrors
Reflection and MirrorsReflection and Mirrors Law of Reflection – the angle of Law of Reflection – the angle of
incidence is equal to the angle of incidence is equal to the angle of reflectionreflection
Diffuse reflection – reflection off of a Diffuse reflection – reflection off of a rough surfacerough surface
Regular reflection – reflection off of a Regular reflection – reflection off of a smooth surfacesmooth surface
Reflection and MirrorsReflection and Mirrors Equal distancesEqual distances
Object – mirror Image – mirrorObject – mirror Image – mirror Concave mirror )Concave mirror ) Convex mirror (Convex mirror ( Optical axis – imaginary line down the Optical axis – imaginary line down the
center of a mirrorcenter of a mirror Focal point – point where all the light Focal point – point where all the light
convergeconverge
Reflection and MirrorsReflection and Mirrors Focal length – length of the focal point to Focal length – length of the focal point to
the mirrorthe mirror →→ ) , if the object is farther away than the ) , if the object is farther away than the
focal point, the image will be upside focal point, the image will be upside downdown
→→ ), if the object is within the focal point, ), if the object is within the focal point, the image will be right side upthe image will be right side up
→ → ((, the image will be small., the image will be small.