Is Young's experiment an interference or a diffraction experiment, or both?

What is diffraction?

Write the experimental procedure of Young's experiment.

In young's experiment what will be the phase difference and path difference between the light waves reaching third bright fringe . take =5000A

In young's experiment what will be the phase difference and path difference between the light wave third dark fringe.

Describe Young's double slit experiment and determine the conditions for obtaining bright and dark fringes.

(Attempt any nine of the following questions) What are coherent sources? In a Young's double slit experiment the intensity of light at a point on the screen where path difference lambda is K units. Find the intensity at a point where the path difference is lambda/ 3 .