Ratio of the velocity of propagation of a light ray in free space to the velocity of propagation of a light ray in free space in a given material. ∙ A. refractive index ∙ B. standing wave ratio ∙ C. velocity factor ∙ D. propagation velocity

Ratio of the velocity of propagation of a light ray in free space to the velocity of propagation of a light ray  in free space in a given material.
∙ A. refractive index  
∙ B. standing wave ratio
∙ C. velocity factor
∙ D. propagation velocity
by

1 Answer

Answer :

∙ A. refractive index
by

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