Three discrete spectral lines occur at angles of 10.3°, 13.6°, and 15.4° in the first-order spectrum of a grating spectrometer. (Assume that the light is incident normally on the gratings.) (a) If the grating has 3 680 slits/cm, what are the wavelengths of the light? (Enter your answers from smallest to largest.) nm nm nm (b) At what angles are these lines found in the second-order spectrum? (Enter your answers from smallest to largest.)

Three discrete spectral lines occur at angles of 10.3°, 13.6°, and 15.4° in the first-order spectrum of a grating spectrometer. (Assume that the light is incident normally on the gratings.) (a) If the grating has 3 680 slits/cm, what are the wavelengths of the light? (Enter your answers from smallest to largest.) nm nm nm (b) At what angles are these lines found in the second-order spectrum? (Enter your answers from smallest to largest.)