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What is the difference between interference and diffraction?

physical optics - diffraction of light
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What is the basic difference between interference and diffraction.


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The difference between interference and diffraction are as follows:

SN Interference Diffraction
1.` It is due to the superposition of wavelets of different wavefronts. It is due to the superposition of wavelets of the different parts of the same wavefront.
2. In interference, bands may be of equal width. In diffraction, fringes are not of the same width.
3. Points of minimum intensity are perfectly dark. Points of minimum intensity are not perfectly dark.
4. All the bright bands are of uniform intensity. All bright bands are not of the same intensity.
5. Bands are large in number. Bands are few in number.

 

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