Plane Mirror Reflections Printer Friendly Version
Refer to the following information for the next five questions.

Match the correct definition to each word.

1. θi = θr
2. produces diffuse reflections when the difference in successive elevations is greater than or equal to 1/8th of the incident wavelength
3. an image which is "trapped" inside a mirror that is formed by our eyes when they "dot back" the diverging rays that are reflected by a mirror.
4. di = -do
5. rays that spread apart from each other

1. Law of Plane Mirrors
2. Law of Reflection
3. rough surface
4. diverging rays
5. virtual image
Refer to the following information for the next nine questions.

Law of Reflection

reflected wavefront
incident ray
interface
normal
angle of reflection
 What is the size of the angle between any ray and its wavefront?

 What is the size of the angle between any normal and its interface?

 What is the relationship between the angle of incidence and the angle of reflection?

True or False? Diffuse reflections obey the Law of Reflection?

Refer to the following information for the next two questions.

Mirror #1 is located at (-4,0) and mirror #2 is located at (2,0). Point P is at the origin, (0,0).

 What are the coordinates of P2?

 What are the coordinates of P21?

Refer to the following information for the next two questions.

Who can A see?
Who can't B see?

 Two plane mirrors form the legs of a 60º angle. When an object is placed between these two mirrors, what is the maximum number of images that could be viewed while looking into the mirrors?

 What is the minimum length of a plane mirror required for someone to see their entire body WITHOUT moving their head?

Which of the following are properties of virtual images formed by plane mirrors?