Please answer in detail will all calculations and work.

Derive the Sellmeier equation from (2.39) for a gas with negligible absorption (Le. y '=" 0, valid far from resonance (on). where lam corresponds to frequency mo and A is a constant. Many materials (e.g. glass, air) have strong resonances in the ultraviolet. In such materials, do you expect the index of refraction for blue light to be greater than that for red light? Make a sketch of n as a function of wavelength for Visible light down to the ultraviolet (where 21mm is located)