1. Every lens has a
     focal point
     center point
     magnetic center

2. Which lens is most like a magnifying glass lens?
     convace
     convex
     concave

3. A focal point is
     where all light directed at that lens twists and turns
     where all light directed at that lens bends
     where all the light directed at that lens converges or diverges

4. The focal length is also referred to as
     FL
     F
     Foc. Len.

5. A concave lens is often used to correct
     nearsightedness
     farsightedness
     astigmatisms

6. All images produced by concave lenses are
     virtual, erect, and reduced
     erect, magnified, virtual
     inverted, reduced and virtual

7. What can be corrected by cementing two lenses together (one convex, one concave) into a single lens?
     wavelength abberation
     chormatic abberation
     lens abberation

8. Lenses can create both real and virtual images.
     yes
     no
     providing there is enough light

Score =
Correct answers: