The distance between adjacent slits of a certain
Chapter 27, Problem 27.97(choose chapter or problem)
The distance between adjacent slits of a certain diffraction grating is 1.250 105 m. The grating is illuminated by monochromatic light with a wavelength of 656.0 nm, and is then heated so that its temperature increases by 100.0 C. Determine the change in the angle of the seventhorder principal maximum that occurs as a result of the thermal expansion of the grating. The coefficient of linear expansion for the diffraction grating is 1.30 104 (C) 1 . Be sure to include the proper algebraic sign with your answer: if the angle increases, if the angle decreases. *
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