Describe Young's experiment to observe an interference of light and write two point of importance of the experiment.

Describe Morgan's experiment.

State the importance of Davisson and germer experiment.

Write a note on Morgan's experiment.

Write short notes on (i) Van Neil's experiment

Young's experiment is performed in air and then performed in water , the fringe width

Answer the following : Describe an experiment to prove that the angle of incidence is equal to the angle of reflection .

Describe Young's double slit interference experiment and derive conditions for occurrence of dark and bright fringes on the screen. Define fringe width and derive a formula for it .

Describe a simple experiment to demonstrate atmospheric pressure.