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Q: The value of absolute refractive index of a medium is always:
  • A. less than 1
  • B. more than 1
  • C. equal to 0
  • D. equal to 1
Correct Answer: Option B - The value of absolute refractive index of a medium is always more than 1. Absolute refractive index is defined as the ratio of the speed of light in a vacuum to the speed of light in the given medium.
B. The value of absolute refractive index of a medium is always more than 1. Absolute refractive index is defined as the ratio of the speed of light in a vacuum to the speed of light in the given medium.

Explanations:

The value of absolute refractive index of a medium is always more than 1. Absolute refractive index is defined as the ratio of the speed of light in a vacuum to the speed of light in the given medium.