Solve the following question:
Question: Light of wavelength 640nm falls on a slit that is 3.80 x 10-3 mm wide.
Part A: How far the first bright diffraction fringe is from the strong central maximum if the screen is 13.0maway.
I need help to find how far the first bright diffraction fringe is from the strong central maximum if the screen is 13.0maway.