What are the formulas to find refractive index of a substance?

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like sin i /sin r

2007-03-05 23:53:52 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Physics

refractive index = c/v
c is the velocity of light in free space.
v is velocity of light in the medium.

2007-03-05 23:58:38 · answer #1 · answered by Tasha 2 · 0⤊ 0⤋

sin i = n sin r

Where i and r are the angles between normal and the rays incident for i , refracted for r

2007-03-06 08:55:23 · answer #2 · answered by maussy 7 · 0⤊ 0⤋