Asked by Hannah

Calculate the index (n water) of refraction of water given the angle of incidence and the angle of refraction.

I know that the accepted value for n is 1.33 but I am not sure how to calculate the index. Would I use Snell's law: na sin Qa = nb sin Qb?

Thank you!
Answered by Steve
yes. I'm sure this question has come from the text section dealing with Snell's Law.
Answered by Hannah
So I just want to make sure I did the math corretly: My value for angle of incidence was 20 degrees and for refraction it was 15 so I did

Sin(20) / sin (15) = 1.32 which is very close to the accepted value.

Is this corret?
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