Question

3) What is the difference between Fraunhofer and
Fresnel type of diffraction ?​

Answer 1

Explanation:

1:If the source of light and screen are at finite distance from the obstacle ,then the diffraction called fresnel diffraction. 1:If the source of light and screen are at infinite distance from obstacle then the diffraction is called fraunhofer diffraction. 2:The corresponding rays are not parallel