The following data was obtained upon using a double-slit experiment. Use this data to determine the wavelength of light being used to create the interference pattern. Do this in three different ways.
- The angle to the eight maximum is 1.12°
- The distance from the slits to the screen is 302 cm
- The distance from the first minimum to the fifth minimum is 2.95cm
- The distance between the slits is 0.025cm
The Attempt at a Solution
My work is shown in this image: http://gyazo.com/b9625064b97100febb726a6f6a12236a
I believe I have interpreted the information correctly. I also believe methods 1 and 3 are correct as they were the most obvious. I have placed a series of question marks on method 2, which I am having trouble understanding. I don't believe they have given me sufficient information to solve this problem as is.
After I have 3 values for wavelength, I plan to average them out to get a final answer.
Does anyone have any insight to this? I seem to be missing a very important variable and I'm not sure how to go about it.