Question 34
Refraction of LightIf the refractive index of crown glass is 1.51, its critical angle is
- A.48.6°.
- B.22.5°.
- C.41.5°.
- D.45.0°.
Show the answer and explanation
Answer: C (41.5°.)
Explanation
sin C = 1/n = 1/1.51 = 0.662, so C ≈ 41.5°.
If the refractive index of crown glass is 1.51, its critical angle is
Answer: C (41.5°.)
sin C = 1/n = 1/1.51 = 0.662, so C ≈ 41.5°.