Question 29
Refraction of LightIf the refractive index of a medium in air is 2.0, what is the critical angle for this medium?
- A.30°
- B.42°
- C.45°
- D.50°
Show the answer and explanation
Answer: A (30°)
Explanation
sin c = 1/n = 1/2, so c = 30°.
If the refractive index of a medium in air is 2.0, what is the critical angle for this medium?
Answer: A (30°)
sin c = 1/n = 1/2, so c = 30°.