Question 35
Refraction of LightI. Rays of light travel from a less dense medium to a denser medium.
II. The Angle of incidence is greater than critical angle.
III. Rays of light travel from a denser medium to a less dense medium.
Which of the statements above are conditions for total internal reflection to occur?
- A.I & II only
- B.I & III only
- C.II & III only
- D.II only.
Show the answer and explanation
Answer: C (II & III only)
Explanation
Total internal reflection needs light going from a denser to a less dense medium, at an angle of incidence greater than the critical angle.