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Statement of a problem № 4042

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Examine two spectral lines of wavelengths 5890 and 5896 A which can be clearly resolved in the (i) first order and (ii) second order by diffraction grating 2 cm wide and having 425 lines/cm.

Solution:
Examine two spectral lines of wavelengths 5890 and 5896 A which can be clearly r

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