Examples

n  Three models of light have been discussed. List these 3 models below.

 

     Ø  ___________________________________  Ray

 

     Ø  ___________________________________  Particle

 

     Ø  ___________________________________  Wave

 

n  When light strikes a surface, 3 options are possible. List these below.

 

     Ø  ___________________________________  Reflected

 

     Ø  ___________________________________  Absorbed

 

     Ø  ___________________________________  Pass through

 

     Ø  Combination of the above (usually the case)

 

n  List the two types of reflection below and give an example of each

 

     Ø  Type 1___________________________________  Diffuse

 

     Ø  Example of type 1___________________________________  Paper

 

     Ø  Type 2___________________________________  Specular

 

     Ø  Example of Type 2___________________________________  Mirror

 

n  State the law of reflection

 

     Angle of incidence = angle of reflection

 

n  Identify the following terminology associated with analysis of a concave mirror.

 

     Ø  The normal to the center of the mirror is called the __________________________  Principle Axis

 

     Ø  The point at which the above normal touches the surface of the mirror is called the  _____________________ vertex

 

     Ø  The point on the normal to the center of the mirror, which is equidistant from all points on the surface of the mirror is called the _________________________________

          center of curvature

  

 Ø  The point where parallel rays come to a focus after reflection is called the __________________ of the mirror. focal point

 

n  The type of mirror typically used for shaving and makeup is a _______________________ mirror. These mirrors make objects appear larger.  concave

 

n  The type of mirror typically used on some vehicles to give a wider field of view is a ___________________ mirror. convex

 

n  The ____________________________ of a material is the ratio of the speed of light in a vacuum to the speed of light in the medium. It is never less than 1. index of refraction

 

n  A ray of light strikes the surface of water as     shown on the right. Give an expression for     q2 in terms of q1.  You do not have to     simplify or evaluate trigonometric functions.   We use Snell's law   n1sinq1 = n2sinq2   sinq2 = (n1/N2)sinq1

 

n  A (an) __________________________________ is a glass or plastic fiber that carries light along its length   optical fiber

 

n  A key idea in ___________________________ principle is that every point on a wavefront can be considered as a source of a tiny wavelet. Huygen's

 

n The branch of optics that describes light propagation in terms of rays is called ___________________ optics.  geometric