A costume jewelry pendant made of cubic zirconia is submerged in oil. A light ray enters one face of the zirconia crystal, then travels at an angle of 25 degrees with respect to the normal. What was the ray's angle of incidence on the crystal?(adsbygoogle = window.adsbygoogle || []).push({});

Relevant equations:

n1 sin(θ1) = n2 sin(θ2)

n1 sin(θ1) = n2 sin(θ2)

2.18 sin(θ1) = 1.46 sin(65)

θ1=37 degrees but the real answer is 35.

Any help to where I went wrong?

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

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# Homework Help: Snell's Law Problem (Please Help !)

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