If k = 7500 lines per cm, at what angle, to the nearest degree, would you find the first order maximum for green light of wavelength 500 millimicrons? A micron is a millionth of a meter. Therefore,

500 millimicrons = 500 nanometers = 5 x 102 x 10-9 m = 5 x 10-7 m


If the diffraction grating in Problem 1 is used, what is the wavelength of light for which the diffraction angle is 30 degrees?