A spectroscopist has a spectrometer equipped with a grating with 600 grooves/mm.

Question

A spectroscopist has a spectrometer equipped with a grating with 600 grooves/mm. This grating puts a 1228 nm wavelength range on a spectroscopic plate (a CCD) in order m = 5. The spectroscopist now changes the spectroscopic plate CCD by one that is larger by a factor of 3. What spectral range will be accepted when the spectroscopist observes the lines in order m = 4 with the new, larger spectroscopic plate?

A) 512 nm
B) 327 nm
C) 4610 nm
D) 2950 nm

Please show all work on how to get to the answer

Explanation / Answer

512nm

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