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What is Fresnel diffraction?...

What is Fresnel diffraction?

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### Step-by-Step Solution: 1. **Definition of Fresnel Diffraction**: Fresnel diffraction refers to the diffraction pattern produced when waves encounter an obstacle or aperture, and the source of the waves is at a finite distance from the obstacle or aperture. 2. **Source of Light**: In Fresnel diffraction, we consider a light source that emits waves. This source can be a point source or any finite source of light. ...
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