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Light from a hydrogen source is incident on a diffraction grating. The incident light contains four...

Light from a hydrogen source is incident on a diffraction grating. The incident light contains four wavelengths: λl = 410.1 nm, λ2 = 434.0 nm, λ3 = 486.1 nm, and λ4 = 656.3 nm. The diffraction grating has 410 lines/mm. Calculate the angles between: λl and λ4 in the first-order spectrum λl and λ3 in the third-order spectrum

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