Determine the right answer of the following question
Question- You measure distances from the center of a diffraction pattern (y) to a series of dark fringes on a screen that is 0.3000 ± 0.0005 m away from the 0.04-mm wide slit you are using to create the pattern. You create a plot of y (in m) vs m and get a slope for the best-fit line of 0.005575 ± 8.425 10-6.
Part 1- What is the wavelength of the laser you used to collect the data?
I want assist to calculate the wavelength of the laser.