4.  The frequency of a light wave is the same when the light travels in ethyl alcohol or in carbon disulfide. Find the ratio of the wavelength of the light in ethyl alcohol to that in carbon disulfide.

 

Solving for λ

So the ratio is

 

 

Use table 26.1 on page 722 to get indices of refraction

 

 

 

 

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This page last updated on July 1, 2018