Exam-style question
Try this first
A light ray passes from air into glass with a refractive index of 1.5. Calculate the critical angle for total internal reflection at the air-glass boundary.
Model answer
What a good answer should say
- The critical angle is 41.8 degrees.
Explanation
Why this works
This question tests the understanding of Snell's law and the concept of critical angle in refraction. The calculation involves using the formula for critical angle derived from Snell's law.
Common mistake
No common mistake is linked to this question yet.