What are the main characteristics of moment sources? Describe Young's double slit interference experiment to determine the wavelength of the source of light.

Describe Young's double slit experiment of interference to estimate the fringe width of the pattern.

Describe double slit experiment to find the fringe width from the experiment performed with light waves.

Describe Young's double slit experiment and obtain an expression for the fringe width.

Discuss Young's double slit experiment and show that bright and dark fringes are of equal width.

Describe Young's double slit experiment and derive an expression for the fringe width in the Interference pattern.

The diagram represents the experimental arrangement used to produce interference fringes in Young’s double slits experiment.

1. What are coherent sources of light?
2. What do you mean by Interference of light?
3. In the above experiment, if the slits S₁ & S₂ are Illuminated by a monochromatic source of light of wavelength λ, show that the width of bright fringe is equal to width of dark fringe as given by β = λD/d.
4. If the distance between slits and the screen is doubled and slits separation is halved. what will be the effect on fringe width?
5. What happened to fringe width if whole apparatus is immersed in water?

Write suitable conditions for interference?

What are coherent sources of light?