In young's experiment, the upper slit is covered by a thin glass plate of refractive index $\frac{4}{3}$ and of thickness $9\lambda$, where $\lambda$ is the wavelength of light used in the experiment. The lower slit is also covered by another glass plate of thickness $2\lambda$ and refractive index $\frac{3}{2}$, as shown in figure. If $I_0$ is the intensity at point $P$ due to slits $S_1\&S_2$ each, then:

 

In Young's double slit experiment, what is the effect on the interference pattern if one of the slits is covered with a translucent paper?

As shown in the figure, in Young's double slit experiment, a thin plate of thickness $t=10 \mathrm{\mu m}$ and refractive index $\mu =1.2$ is inserted infront of slit $S_1$. The experiment is conducted in air ($\mu =1$) and uses a monochromatic light of wavelength $\lambda =500 \mathrm{nm}$. Due to the insertion of the plate, central maxima is shifted by a distance of $x{\beta }_0$. ${\beta }_0$ is the fringe-width before the insertion of the plate. The value of the $x$ is ______.

In Young’s double slit experiment, two slits $S_1$ and $S_2$ are $d$ distance apart and the separation from slits to screen is $D$ (as shown in figure). Now if two transparent slabs of equal thickness $0.1 \mathrm{mm}$ but refractive index $1.51$ and $1.55$ are introduced in the path of beam $\left(\mathrm{\lambda }=4000 \mathrm{\AA }\right)$ from $S_1$ and $S_2$ respectively. The central bright fringe spot will shift by ________ number of fringes.

Two coherent point sources $S_1$ and $S_2$ are separated by a small distance $d$ as shown in the figure. The fringes obtained on the screen will be

In a Young's double slit experiment with light of wavelength $\mathrm{\lambda ,}$ the separation of slits is $d$ and distance of screen is $D$ such that $D\gg d\gg \lambda$ . If the Fringe width is $\beta$ , the distance from point of maximum intensity to the point where intensity falls to half of the maximum intensity on either side is:

The Young's double slit experiment is performed with blue light and green light of wavelengths $4360 \mathrm{\AA }$ and $5460 \mathrm{\AA }$ respectively. If $X$ is the distance of $4^{th}$ maxima from the central one, then