When a beam of light, which is traveling in glass, strikes an air boundary, there is
A. a 90e phase change in the reflected beam.
B. no phase change in the reflected beam.
C. a 180e phase change in the reflected beam.
D. a 45e phase change in the reflected beam.
Answer:B
When a beam of light, which is traveling in glass, strikes an air boundary, there is
A. a 90e phase change in the reflected beam. B. no phase change in the reflected beam. C. a 180e phase change in the reflected beam. D. a 45e phase change in the reflected beam.