Two sources give interterence pattern which is observed on a screen, placed at a distance $D$ from the sources. The fringe width is given as $2W$. If the distance of sources from the screen is doubled, then the fringe width will

Q.

In Young's double slit experiment, if the separation between coherent sources is halved and the distance of the screen from the coherent sources is doubled, then the fringe width becomes :

Q. The distance between two coherent sources produced by a bi-prism is $1.0mm$. When distance between the source and the screen is $0.9m$, the fringe width obtained is $0.12mm$. If the screen is placed at a distance of $1.8m$, then the fringe width will be

Q. In Young's double slit experiment using $\lambda =6000A^0,$ distance between the screen and the source is 1m. If the fringe width on the screen is 0.06 cm, the distance between the two coherent sources is

Q. In Young's experiment $\lambda =$ 4000Å fringes observed have a width $\beta$ . The light illuminating with new $\lambda =$ 6000Å and the separation between the interfering sources is halved. The ratio of the distance between the screen and the interfering sources if the fringe width remains unaltered respectively is:

Q. Two coherent light sources $S_1$ and $S_2(\lambda =6000\stackrel{o}{A})$ are 1 mm apart from each other. The screen is placed at a distance of 25 cm from the sources. The width of the fringes on the screen should be