When a wave undergoes reflection from a

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Target Exam

CUET

Subject

Physics

Chapter

Wave Optics

Question:

When a wave undergoes reflection from a denser medium, by how much does its phase change ?

Options:

zero

45 degrees

90 degrees

180 degrees

Correct Answer:

180 degrees

Explanation:

Memory Point !!

When a wave travels from rarer to denser medium, its phase changes by 180 degrees.