Exam-style question
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Using Snell's law, calculate the angle of refraction when a light wave passes from air (n1 = 1.00) into water (n2 = 1.33) at an angle of incidence of 30 degrees.
Model answer
What a good answer should say
- The angle of refraction is approximately 22.4 degrees.
Explanation
Why this works
This question tests the application of Snell's law in a practical scenario. It requires the student to perform a calculation based on the relationship between the indices of refraction and the angles, demonstrating their ability to apply theoretical knowledge.
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