Lab questions

These are the same ones that were already in the lab handout - nothing new here.

1)      Mathematically, what is the distinction between real and virtual images?

2)      Mathematically, what is the distinction between convex and concave lenses?

3)      Are there any object distances (d_o) where NO images should appear?

4)      What exactly is f, the focal point/length?  What factor(s) do you suppose determines the f of a lens?

5)      What is the effect of covering half of the lens?  Does it matter how you cover it?

6)      What happens to the image formed as the object distance nears the focal point (f)?  Mathematically, what is happening?

7)      Mathematically, how can we predict whether or not an image is larger or smaller, right-side up or upside-down?

8)      How are lenses and mirrors similar and different?