question archive The index of refraction for Lucite is 1
The index of refraction for Lucite is 1
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The index of refraction for Lucite is 1.5. What is the approximate speed of light in the Lucite?
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Answer:
?Refactive index of medium = speed of light in vaccum/speed of light in medium
Given,
Refractive index of Lucite = 1.5
And we know, speed of light in vaccum = 3 × 10? m/s
Now, we have to find speed of light in Lucite ,
∴ 1.5 = 3 × 10? /speed of light in Lucite
Speed of light in Lucite = 3 × 10?/1.5 = 2 × 10? m/s
Hence, answer is 2 × 10? m/s
