In: Physics
Three discrete spectral lines occur at angles of 10.2°, 13.5°, and 14.6°, respectively, in the first-order spectrum of a diffraction grating spectrometer.
(a) If the grating has 3780 slits/cm, what are the wavelengths of the light?
| λ1 | = nm (10.2°) | 
| λ2 | = nm (13.5°) | 
| λ3 | = nm (14.6°) | 
(b) At what angles are these lines found in the second-order
spectra?
| θ | = ° (λ1) | 
| θ | = ° (λ2) | 
| θ | = ° (λ3) |