Refraction Of Light Video Lessons

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Problem: 1. Can index of refraction be less than 1?  Explain? 2. When the light comes out of the glass to the air, is the refraction angle larger, or smaller than the incident angle? 

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1.

Refractive index:

η=cv=λ0λmwhere c is the speed of light in a vacuum, v is the speed of light in the medium. λ0 is the refractive index in vacuum while λm i the refractive index in medium.

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Problem Details

1. Can index of refraction be less than 1?  Explain? 

2. When the light comes out of the glass to the air, is the refraction angle larger, or smaller than the incident angle? 

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