Multiple choice general knowledge science & technology

Refractive index of vacuum is:

  1. 0

  2. 1

  3. 1.01

  4. 1.2
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The refractive index of vacuum is defined as exactly 1, serving as the reference medium for all other refractive indices. Air has n≈1.0003, often approximated as 1.

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