Three discrete spectral lines occur at angles of 10.0°, 13.6°, and 15.0°, respectively, in the first-order spectrum of a diffraction grating spectrometer.
(a) if the grating has 3750 slits/cm, what are the wavelengths of the light?
λ1 = nm (10.0°)
λ2 = nm (13.6°)
λ3 = nm (15.0°)
(b) at what angles are these lines found in the second-order spectra?
θ = ° (λ1)
θ = ° (λ2)
θ = ° (λ3)

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