Hi, i exam is coming up in a week and i have no clue so wat ever on how to solve this question.(adsbygoogle = window.adsbygoogle || []).push({});

How do i calculate the minimum number of lines???

What i need to answer to have full marks??

Q:

The Sodium vapor spectrum contains two bright yellow lines which have almost the same

wavelength (589.0 nm and 589.6 nm). Calculate the minimum number of lines required

in a grating which can resolve these lines in the second order.

:(

if you have some spare time, please help me out.

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# Homework Help: Optics/Spectrum Question

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