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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Quizplus · Accepted Answer

The speed of light in a medium is given by v = c/n, where c is the speed of light in vacuum and n is the index of refraction. For fused quartz, v = 3.00 x 10^8 m/s / 1.56 = 1.92 x 10^8 m/s.

Fused Quartz Has an Index of Refraction of 1