Physicshard · Past Paper
What is the relation between the speed of light in vacuum (c), speed in medium (v) and refractive index (n)?
An = v/c
Bn = c/v
Cn = cv
Dn = 1/cv
✓ Correct Answer: B — n = c/v
Refractive index is the ratio of the speed of light in vacuum to its speed in the specific medium.
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