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Three discrete spectral lines occur at angles of 10.4°, 13.6°, and 14.9°, respectively, in the first-order...

Three discrete spectral lines occur at angles of 10.4°, 13.6°, and 14.9°, respectively, in the first-order spectrum of a diffraction grating spectrometer.

(a) If the grating has 3740 slits/cm, what are the wavelengths of the light?

λ1 = nm (10.4°)

λ2 = nm (13.6°)

λ3 = nm (14.9°)

(b) At what angles are these lines found in the second-order spectra?

θ = ° (λ1)

θ = ° (λ2)

θ = ° (λ3)

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