Question
A medium has refractive index 1.25. What is light speed in it if c=3.0×10^8 m/s?
Select an option. Your answer will be checked instantly.
Correct Answer: A. 2.4 × 10^8 m/s
Explanation:
Use v=c/n.
V=3.0×10^8/1.25 = 2.4×10^8 m/s.
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