Suppose the interference pattern shown in the figure is produced by monochromatic light passing through two slits, with a separation of 127 µm, and onto a screen 1.14 m away. What is the wavelength?
wavelength = (dsin[tex]\theta[/tex]) / m
The Attempt at a Solution
[tex]\theta[/tex]= arctan (y/L) = arctan (.023 / 1.4) = .941
then plugged it in to get wavelenth. i used m = 2 for 2 slits
wavelenth = 127 x 10^-6m x sin .941 / 2
i think I have m wrong?