What can be said about the refractive index of medium P as compared to that of the medium Q?
As a ray of light entered medium P from medium Q, its velocity increased.
What can be said about the refractive index of medium P as compared to that of the medium Q?
A. It is lower.
B. It is higher.
C. It is the same.
D. Nothing can be said without knowing what medium P and medium Q are.
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