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Q: The refractive index of a material can be linked with relative –––––––– of propagation of light in different media.
  • A. displacement
  • B. acceleration
  • C. force
  • D. speed
Correct Answer: Option D - The refractive index is the measure of bending of a light ray when passing from one medium to another. The refractive index of a material can be linked with relative speed of propagation of light in different media.
D. The refractive index is the measure of bending of a light ray when passing from one medium to another. The refractive index of a material can be linked with relative speed of propagation of light in different media.

Explanations:

The refractive index is the measure of bending of a light ray when passing from one medium to another. The refractive index of a material can be linked with relative speed of propagation of light in different media.