What distance between two spectral lines in first spectrum

Reference no: EM131003819

A light source emits two spectral lines: one at 552 nm and one at 642 nm. If the spectrum is observed using a diffraction grating with 445 line/mm and vied on a screen 2.0 m away, what is the distance between the two spectral lines in the first order spectrum? Give your answer in centimeter. (Hint: You cannot use the small angle approximation for this problem).

Reference no: EM131003819

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