Fused Quartz Has an Index of Refraction of 1

question 69

Multiple Choice

Fused quartz has an index of refraction of 1.56 for light from a 560-nm source.What is the speed of light for this wavelength within the quartz? (c = 3.00 x´ 10⁸ m/s)

• A)1.56 x 10⁸ m/s
• B)1.92 x 10⁸ m/s
• C)2.19 x 10⁸ m/s
• D)4.68 x 10⁸ m/s

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