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Question #94267
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Question
What is the speed of light in a medium with refractive index 1.5?
A. 3.0 × 10⁸ m/s
B. 2.5 × 10⁸ m/s
C. 2.0 × 10⁸ m/s
D. 1.8 × 10⁸ m/s
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