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A student notices that light travels slower in diamond than in water. This means ...

A student notices that light travels slower in diamond than in water. This means diamond has:
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
  • A Weaker total reflection
  • B Higher refractive index
  • C Lower refractive index
  • D Smaller optical density
Correct Answer: Option B
Explanation:
Higher refractive index means lower speed of light inside the material. Since light moves more slowly in diamond, diamond must have a higher refractive index than water.

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