An optic fiber is made of clear plastic withindex of refraction of 1.50. For what angle of incidence will lightremain within the plastic "guide"? A) > 41.8 degrees B) > 21.1 degrees C) > 38.3 degrees D) > 40.3 degrees E) > 23.4 degrees Why? An optic fiber is made of clear plastic withindex of refraction of 1.50. For what angle of incidence will lightremain within the plastic "guide"? A) > 41.8 degrees B) > 21.1 degrees C) > 38.3 degrees D) > 40.3 degrees E) > 23.4 degrees Why?
Explanation / Answer
to get the total internal reflection theangle of incidence must be greater than the critical angle(c) so that the relation between the critical angle and index ofrefraction () is given by = 1 / sinc solve for c