Single Answer MCQ
Q-00001657
How is the refractive index of a medium with respect to vacuum calculated?
1
n = Speed of light in vacuum / Speed of light in medium
2
n = Speed of light in medium / Speed of light in vacuum
3
n = Speed of light in vacuum + Speed of light in medium
4
n = Speed of light in vacuum - Speed of light in medium
Answer and Solution
Answer
A. n = Speed of light in vacuum / Speed of light in medium
Solution:
The refractive index of a medium with respect to vacuum is calculated by dividing the speed of light in vacuum by the speed of light in the medium. This ratio gives the factor by which light slows down in the medium compared to vacuum.
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