1. Which of the following is necessary for light to undergo total internal
reflection?
О
о
a. The angle of incidence is less than the critical angle.
1 point
b. Light moves from a medium with a lower index of refraction into a medium with a
higher index of refraction.
c. Light moves from a medium with a higher index of refraction into a medium with a
lower index of refraction.
d. The internal surface of the medium has a reflective surface like a mirror.