A physics instructor wants to project a spectrum ofvisible-light colors from 400 nm to 700 nm as part of a classroomdemonstration. She shines a beam of white light through adiffraction grating that has 600 lines per mm, projecting a patternon a screen 2.9 m behind the grating.
How wide is the spectrum that corresponds to m = 1? Express youranswer with the appropriate units.
How much distance separates the end of the m = 1 spectrum andthe start of the m = 2 spectrum?
