Exam-style question
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What is diffraction in the context of wave behavior?.
- A.The bending of waves around obstacles or through openings
- B.The change in direction of waves as they pass from one medium to another
- C.The interference of two or more waves resulting in a new wave pattern
- D.The reflection of waves off a surface
Model answer
What a good answer should say
- The bending of waves around obstacles or through openings
Explanation
Why this works
Diffraction is defined as the bending of waves around obstacles or through openings, which occurs when waves encounter an obstacle or a slit that is comparable in size to their wavelength. This phenomenon applies when waves pass through narrow gaps or around edges, leading to spreading and interference patterns.
In contrast, refraction involves a change in wave speed at a boundary, and interference refers to the superposition of waves leading to constructive or destructive patterns. Therefore, diffraction specifically describes wave behavior in relation to obstacles and apertures.
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