The index of refraction of a certain type of glass is expressed by the relation: 4825 nm2 n(1) = 1.525 + What is the phase velocity of a pulse propagating %3D 22 in this glass and centered at 600 nm? O 2.550 x 10^8 m/s O 1.929 x 10^8 m/s O 1.943 x 10^8 m/s O 1.950 x 10 8 m/s O 2.543 x 10^8 m/s 2.529 x 10^8 m/s
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