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How do I calculate the Incident Angle of light ?
I am asked to calculate the Incident Angle of Light when the angle of refraction is 18 degrees and the refractive index of the medium is n=1.568.
My calculation is based on Snell's Law and my answer is 28.224 degrees. Am I right or am I doing something fundamentally wrong? Your calculation would be appreciated!!!
Snell's law is that n1*sin(theta1)=n2*sin(theta2)
I mean I guess the question is: Is the incident material air? If so then
sin(theta1)=1.568*sin(18)=28.98 degrees
Perhaps you made a rounding error, but in any case your approach is right so long as the incident material is air.
