In Young's double slit experiment describe briefly how bright and dark fringes are obtained on the screen kept in front of a double slit. Hence obtain the expression for the fringe width.

(a) In Young's double slit experiment, describe briefly how bright and dark frings are obtained on the screen kept in front of a double slit. Hence obtain the expression for the fringe width. (b) The ratio of the intensities at minima to the maxima in the Young's double slit experiment is 9 : 25. Find the ratio of the widths of the two slits.

In Young's double slit experiment, the interference bright fringes are of:

In Youngs double slit experiment, to increase the fringe width