Physics Review Question

Unit: waves
Year: 1996 Question#: 43
Question: The speed of light in a material is 2.5 x 108 meters per second. What is the absolute index of refraction of the material

(1 ) 1.2
(2 ) 2.5
(3 ) 7.5
(4 ) 0.83

What is this question really asking?





Explanation by: Joe W

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Answer 1
1.2

CORRECT

Using the formula n= c/v, where n= absolute index of refraction, c= the speed of light in a vacuum, and v is the speed of light in the material, you get 1.2 return to top























Answer 2
2.5

INCORRECT

Try using the formula n= c/v, where n= absolute index of refraction, c= the speed of light in a vacuum, and v is the speed of light in the material. return to top



























Answer 3
7.5

INCORRECT

Try using the formula n= c/v, where n= absolute index of refraction, c= the speed of light in a vacuum, and v is the speed of light in the material. return to top


























Answer 4
0.83

INCORRECT

Try using the formula n= c/v, where n= absolute index of refraction, c= the speed of light in a vacuum, and v is the speed of light in the material. return to top


























What's this question really asking?

What is the most that the wave will refract when it enters the medium and travels through it? return to top

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