1. How many nanometers are there in one meter?
The answer has units [nm/m].

- 106
- 10-6
- 103
- 10-3
- 10-9
- 109
- 103/109
- 109/103

2. What does ? represent in this experiment?

- wavelength
- speed of light
- Period (T)
- da'... ? = da' baby sheep
- frequency (f)
- wave speed

3. The purpose of the Laser Diffraction lab is to:

- measure the spacing between the slits
- measure the wavelength of the laser
- count spots
- create holograms
- measure the speed of light
- measure the frequency (color) of the laser light
- play laser tag

4. Our "replica gratings" are made of:

- tin foil
- glass
- they aren't replicas, they are the real mccoy costing about 6K apiece!
- very thin paper
- tissue
- metal
- plastic

5. If you could count how many slits there where per millimeter,how could you find the separation between the slits?

- slits per millimeter/?
- The separation is the separation.
- ?/slits per millimeter
- 1/slits per millimeter
- It is impossible without first measuring the width of a singleslit.

6. How many nanometers are there in one millimeter?
The answer has units [nm/mm].

- 103/109
- 10-9
- 10-6
- 106/103
- 109
- 10-3
- 103
- 106

7. What is the wavelength of the laser light we will use?

? = [mm]

8. What creates the constructive interference to create a spotof light at point p as shown in diagram 1 of the lab manual?

- tan ?3 = y3x-1
- ? + ? = 180

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