Calculate the angle of the second-order maximum for monochromatic light of wavelength 550nm if it illuminates
a)a double slit with a slit seperation of 2.0x10^-6m
b)a diffraction grating with 10 500 slits in 1.0m
2nd fringe occurs when m = 2:
Solve for .
For multiple-slit interference with diffraction gratings, we have the same equation as above also with m = 2:
To find d, note that each slit are presumed to be equally spaced from one another. So, the distance between two slits is: