Problems in light - 1

1.  All electromagnetic waves have the same _______.  Discuss.

2.  Explain the law of reflection.  What does it mean and what does it have to do with mirrors?

3.  When and why does refraction occur?

4.  Draw a picture that depicts a single light ray entering and exiting a glass rectangular block.

5.  Draw a picture that depicts a single light ray entering and exiting a convex lens.

6.  Repeat for a concave lens.

7.  Repeat for an equilateral prism.

8.  What is total internal reflection and when does it occur?

9.  What is an index of refraction?  Related to this, what is the point of high-index lenses?
10.  What is the difference between nearsightedness and farsightedness?