Question: A 6900 line/cm diffraction grating is 3.42 cm wide. If light with wavelengths near 629 nm falls on the grating, how close can two wavelengths()

A 6900 line/cm diffraction grating is 3.42 cm wide.

If light with wavelengths near 629 nm falls on the grating, how close can two wavelengths(Δλ) be if they are to be resolved in any order?

Express your answer using two significant figures

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