Quiz 6a (Phys 101 - 11.30am, Spring 2005)

Name: ___________________Answers___________________

1. True or false? Light of different frequencies travel at different speeds through a vacuum.

False. Light of different frequencies travel at the same speed through a vacuum.

2. Light is incident on a mirror at an angle of incidence of 20^o.

(a) Draw a diagram showing the angle of incidence and the angle of reflection.

See figure 28.6 on page 534 in textbook.

(b) How are these two angles related?

They are equal.

3. You are standing 2m in front of a mirror. Where will the image of you in the mirror appear to be?

The image will appear to be 2m `behind` the mirror.