The Ocean Optics USB2000+ has a grating with groove density 600 grooves mm-1 . I

Question

The Ocean Optics USB2000+ has a grating with groove density 600 grooves mm-1 . It covers a spectral range from 200 – 850 nm, and its blaze wavelength is 300 nm. a.

Use the grating equations to calculate the resolving power of the grating

I know resolving power is R=nN where N is the number of groves and n is the grating order. I am confused as to which number corresponds to n and N. I also have access to these two sites. The pathlength is 1cm^-1

http://oceanoptics.com/product-details/usb2000-optical-bench-options/#6

https://oceanoptics.com/faq/choice-slit-size-affect-resolution/

Explanation / Answer

N is number of grooves per m.

here given that number of groves per mm=600

then N=600*1000=6*10^5

n will be the order of the diffraction pattern for which you are trying to calculate the resolving power

n can have any non-zero integer value.

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