Please explain. A beam of light traveling in air is reflected from a glass surfa
ID: 1398001 • Letter: P
Question
Please explain.
A beam of light traveling in air is reflected from a glass surface. There is
A. no phase change in the reflected beam.
B. a 90° phase change in the reflected beam.
C. a 180° phase change in the reflected beam.
D. a 60° phase change in the reflected beam.
A beam of light traveling in air is reflected by a glass surface. There is
A. no phase change in the reflected beam.
B. a 90° phase change in the reflected beam.
C. a 180° phase change in the reflected beam.
D. a 60° phase change in the reflected beam.
A. n1 < n2 < n3
B. n2 < n1 < n3
C. n1 > n2 > n3
D. n1 > n3 > n2
A. no phase change in the reflected beam.
B. a 90° phase change in the reflected beam.
C. a 180° phase change in the reflected beam.
D. a 60° phase change in the reflected beam.
medium 2 medium 1Explanation / Answer
1)
A. no phase change in the reflected beam.
2)
The answer is E. The deviation from the horizontal tells you which has the higher refractive index. 2 has the greatest deviation from a horizontal line while 3 has the least deviation, which justifies E as the answer.
E. n3 < n1 < n2