PRACTICE QUIZ 16B

Answer the following questions completely and clearly.

1. Why is light considered a transverse wave?

  

2. Certain sunglasses can remove the glare from the surface of water or pavement. Describe in detail the physics of the process. Will these glasses remove the glare from store windows? Why or why not?

  

 

 

 

 3. Name the phenomenon which explains why soap bubbles reflect a "rainbow" of colors.

  

4. Many newer $20 bills have a security feature involving a thin layer of some material at the lower righthand corner. How does the film enhance the reflection of green light? What could the designers have done to make the film reflect blue instead of green?

  

 

 

5. Draw a diagram showing a thin film which is reinforcing the reflection of some wavelength of light.

 

 

 

6. Draw a diagram showing a thin film which is cancelling out the reflection of some wavelength of light.

 

 

 

7. Describe on the atomic level what is happening to make a magenta optical filter appear magenta when red, green, and blue light shine through it.

 

 

8. Name the three primary colors of light. Name their respective complementary colors.

    

9. A sheet of yellow paper is being illuminated by blue and green light. What color will the paper appear to an observer?

10. A sheet of blue paper is being illuminated by red and green light. What color will the paper appear to an observer?