How does the speed of light determine the optical density of a me… - Vidyadip

Question

How does the speed of light determine the optical density of a medium?

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Answer

If the speed of light in a medium is less than the speed of light in air, means the $\text{MEDIUM}$ is $\text{DENSER}$ than air.
If the speed of light is more than the speed of light in $\text{AIR,}$ means the $\text{MEDIUM}$ is $\text{LESS DENSER}$ than air.
Speed of light is $1$ density of medium

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