some answers.

Doppler and Light problems:

1.  To you, the frequency would appear:
a.  lower
b.  higher
c.  same
d.  higher
e.  lower

2.  expanding universe

3.  light source moving away from or toward you

4.  see notes

5.  a.  320 x 2
b.  320/2
c.  320 x 8
d.  320 x 1.059
e.  320 x 1.059^3

6-7 notes

8.  less than 45

9.  See notes on total internal reflection

10.  notes


Light pt 2

1.  where light converges in a convex lens or concave mirror, when the light rays are initially parallel (which usually happens when the object is very far away)

2.  no.  distance between lens or mirror and object

3.  convex lenses - thicker in middle.  They *can* produce real images on sheets of paper (though not when the object is within f).

concave lenses - thinner in middle.  They never produce real images on screens/paper.

4.  Concave mirrors are like convex lenses.  Like shaving mirrors.

Convex mirrors are like concave lenses.  Like convenience stores mirrors.

5-8.  notes