Question: For blue light, a transparent material has a relative permittivity (dielectric constant) of 2.1 and a relative permeability of 1.0. If the speed of

For blue light, a transparent material has a relative permittivity (dielectric constant)

For blue light, a transparent material has a relative permittivity (dielectric constant) of 2.1 and a relative permeability of 1.0. If the speed of light in vacuum is e, the phase velocity of blue light in an unbounded medium of this material is A. 3.1 c B. 2.1 c C. c/V1.1 D. c/V2.1 E. c/3.1

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