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The speed of light in a particular material is 2.10 × 108 m/s. What is the index of refraction of this material?
How long would it take a pulse of light to travel through 10 cm thick piece of
this material?
1 Answer
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- AshLv 73 years ago
index of refraction, n = c/v = (3 x 10⁸)/(2.10 x 10⁸) = 1.43
time = distance/speed = (0.1 m)/(2.10 x 10⁸ m/s) = 4.76 x 10⁻¹⁰ s = 476 pico seconds
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