Fused Quartz Has an Index of Refraction of 1

question 81

Multiple Choice

Fused quartz has an index of refraction of 1.55 for light from a 550-nm source.What is the speed of light for this wavelength within the quartz? (c = 3.00 × 10⁸ m/s)

• A) 1.55 × 10⁸ m/s
• B) 1.94 × 10⁸ m/s
• C) 2.41 × 10⁸ m/s
• D) 1.25 × 10⁸ m/s
• E) ​1.45 × 10⁸ m/s

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