Exam-style question
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According to Snell's law, what is the relationship between the angles of incidence and refraction?.
- A.sin(i)/sin(r) = constant
- B.sin(i) = sin(r) x constant
- C.i = r x constant
- D.i + r = constant
Model answer
What a good answer should say
- sin(i)/sin(r) = constant
Explanation
Why this works
Snell's law states that the ratio of the sine of the angle of incidence (i) to the sine of the angle of refraction (r) is constant and is equal to the ratio of the velocities of the two media, which is fundamental in understanding refraction.
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