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Viktor [21]
3 years ago
14

The critical angle for a light ray travelling from a ruby into ethyl alcohol is 50.6 degrees celsius. Determine the index of ref

raction for ethyl alcohol.
Physics
1 answer:
stepan [7]3 years ago
8 0
In order to answer this question, I realized that I needed to know the index
of refraction for ruby, so I went and looked it up.  It's  1.762 to 1.770 .

I started trying to remember how to use this number and the critical angle
to find the index of refraction of the other medium.  That's when I saw the
absurd unit "degrees celsius" for the critical angle, and I got discouraged.
But I perked up very quickly, when I realized that I'm still on the "index of
refraction" list, and while I'm there, I might as well just go ahead and
look up ethyl alcohol too.

It's  1.36  .


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Answer:

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Explanation:

a) Hooke's law is

              F = k x

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            K_{e} = ½ k x²

             k = 2 K_{e}  / x²

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We replace and look for elastic force

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b) The definition of work is

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The final distance

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