Light passes from air into glass of refractive index 1.50 at an angle of incidence of 40 degrees. What is the angle of refraction?
Answer and explanation
Correct answer: D. 25.4 degrees
- Step 1: Snell's law: . Step 2. , so . Answer: 25.4 degrees. Why not the others: 26.7 degrees divides the angle by 1.5; 60.0 degrees multiplies the angle by 1.5; 74.6 degrees multiplies the sine instead of dividing.
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