Obtain the condition for gettin dark and bright fringes in Young's experiment.Hence write the experssion for the fringe width.

Fill ups The width of dark and bright frings are……………… .

State two conditions for two light sources to be coherent. Derive an expression for the fringe width in Young.s double slit experiment for interfernce with suitable diagram.

How will the angular separation and visibility of fringes in Young's double slit experiment change when Width of the source-slit is increased.

Tick the correct option: In Young's double slit experiment the fringe width beta is :

In Young's double slit experiment what is the shape of interference fringes?

A beam of light consisting of two wavelegnths, 6,500 overset @A and 5,200 overset @A is used to obtain interfrerence fringes in a Young's double slit experirmejnt.The distance between the slits and the screen is 120 cm. Find the distance of third bright fringe on the screen from the central maximum for the wavelength 6,500 overset @A .