Question

difference between Fresnel diffraction and Fraunhofer diffraction​

Answer 1

☆ DIFFERENCE BETWEEN FRESNEL AND FRAUNHOFER

If the source of light and the screen are at a finite distance from the obstacle causing the diffraction then it is Fresnel diffraction. If there is an infinite distance between the source and the screen from the obstacle then it is Fraunhofer diffraction.

The diffraction pattern is formed on a flat plate in Fresnel diffraction and on a spherical plate in Fraunhofer diffraction.

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