A Spectroscopist Has a Spectrometer Equipped with a Grating with 600

Multiple Choice

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