(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Monochromatic light illuminates a diffraction grating having 5950 lines/cm. The diffraction angle for the first order image is 18 degrees. what is the wavelength in nm

2. Relevant equations

wavelength=D * Sin(Theta

3. The attempt at a solution

So I know theta is 18, and the D is cm over lines so you have to flip 5950 to 1/5950. What I dont know is does this need to be in nm, or can you leave it in cm. Please explain how to do this for me. Thanks in advance

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# Homework Help: Help with a diffraction grating problem

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