Question 33
Refraction of LightWhat is the approximate critical angle for total internal reflection for diamond if the refractive index of diamond is 2.42?
- A.21°
- B.22°
- C.23°
- D.24°
Show the answer and explanation
Answer: D (24°)
Explanation
sin C = 1/n = 1/2.42 = 0.413, so C ≈ 24°.