When a Beam of Light That Is Traveling in Air

question 29

Multiple Choice

When a beam of light that is traveling in air is reflected by a glass surface,there is

• A)a 90° phase change in the reflected beam.
• B)no phase change in the reflected beam.
• C)a 180° phase change in the reflected beam.
• D)a 60° phase change in the reflected beam.
• E)a 45° phase change in the reflected beam.

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Definitions:

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