Physics Help Forum Wavelength in material

 Feb 9th 2011, 08:37 PM #1 Junior Member   Join Date: Feb 2011 Posts: 5 Wavelength in material This question is a two part question and I have answered the first part, but for the sake of the getting help on the second part I'll put the first. 1. Light passes from material A, which has an index of refraction of 4/3, into material B, which has an index of refraction of 5/4. Find the ratio of the speed of light in material B to the speed of light in material A. The speed of light in material A = 2.25E8 m/s and the speed of light in material B = 2.40E8 m/s 2. In exercise 1, what is the ratio of the light's wavelength in material B to that in material A?
Feb 9th 2011, 08:41 PM   #2

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 Originally Posted by Tesoro72 This question is a two part question and I have answered the first part, but for the sake of the getting help on the second part I'll put the first. 1. Light passes from material A, which has an index of refraction of 4/3, into material B, which has an index of refraction of 5/4. Find the ratio of the speed of light in material B to the speed of light in material A. The speed of light in material A = 2.25E8 m/s and the speed of light in material B = 2.40E8 m/s 2. In exercise 1, what is the ratio of the light's wavelength in material B to that in material A?
Hint: c = (lambda)f. We know that f is the same for both media....

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 Feb 9th 2011, 08:44 PM #3 Junior Member   Join Date: Feb 2011 Posts: 5 I know that the frequency of light doesn't change through each medium, but I haven't learned lambda nvm, I just had a brain fart lambda = λ Last edited by Tesoro72; Feb 9th 2011 at 08:48 PM.

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