Question Detail
Question
The critical angle for a beam of light passing from water into air is 48.8°. This means that all light rays with an angle of incidence greater than this angle will be
Correct Answer
Option B is the correct answer.
Detailed Explanation
The critical angle is the angle of incidence for which the angle of refraction is 90°. For angles of incidence greater than the critical angle, total internal reflection occurs: all light is reflected back into the denser medium.
Hint
Definition of total internal reflection.