17) What are the uses of a diffraction grating? Ans: The following are uses of diffraction grating: The diffraction grating is an immensely useful tool for the separation of the spectral lines associated with atomic transitions. It acts as a "super prism", separating the different colors of light much more than the dispersion effect in a prism. The rainbow-like iridescent reflection on CDs, DVDs, and bluray discs is an example of diffraction grating. Diffraction gratings are extremely useful...
