How does refractive (µ) of a material vary with respect to wavelength (`lambda`)? A and B are constants

How does refractive index (mu) of a material vary with respect to wavelenght (lambda) . (A and B are constants).

How does the effective power radiated by an antenna vary with wavelength?

How does the effective power radiated by an antenna vary with wavelength?

How does the effective power radiated by an antenna vary with wavelength?

The refractive index of material varies with wavelength according to the Cauchy’s relation is

How does the width of central maximum vary with the wavelength of light used?

How does the refractive index of a medium depend on the wavelength of light used ?