Question

​Describe the method of dividing a cylindrical wave front into half period strips and find its effect an external point.

Answer 1

The particular aspect been mentioned here is the best example of the property of diffraction.

Diffraction is a very important component of scientific application.

There are two kinds of diffraction i.e. Fresnel diffraction and Fraunhofer diffraction.

In this case, the theory that has been exhibited is that of the Fresnel's theory on diffraction.

This is just to show the variation of overall intensity and how it can be seen.

So the final result will zero on external point.