Wave Optics — JEE Advanced PYQs

In the List-I, four optical effects are mentioned. The physical phenomena of light which are essential to describe these optical effects are given in List-II. Choose the option which describes the correct match between the entries in List-I to those in List-II.

| List-I | | Lis …

In a single slit diffraction experiment, a slit of width $(0.016\pm 0.002)\mathrm{mm}$ is used to measure the wavelength of a monochromatic light source. In the diffraction pattern, the angular distance between the central maximum and first minimum is measured to be …

As shown in the figure, a ray $AB$ of unpolarized light enters from water of refractive index $n_w=4/3$ into a medium of refractive index $n_p=4/\sqrt{3}$ after passing through a glass plate of refractive index $n_g=1.5$ and a layer of water. At a particular inc …

A solid glass sphere of refractive index $n=\sqrt{3}$ and radius $R$ contains a spherical air cavity of radius $\frac{\mathrm{R}}{2}$, as shown in the figure. A very thin glass layer is present at the point O so that the air cavity (refractive index $n=1$ ) remains inside …

In a Young's double slit experiment, a combination of two glass wedges $A$ and $B$, having refractive indices 1.7 and 1.5, respectively, are placed in front of the slits, as shown in the figure. The separation between the slits is $d=2$ mm and the shortest distance between …

A point source S emits unpolarized light uniformly in all directions. At two points A and B, the ratio $\mathrm{r}={\mathrm{I}}_{\mathrm{A}}/{\mathrm{I}}_{\mathrm{B}}$ of the intensities of light is 2. If a set of two polaroids having 45° angle between their pass-axes is placed j …

In a Young's double slit experiment, each of the two slits A and B, as shown in the figure, are oscillating about their fixed center and with a mean separation of 0.8 mm . The distance between the slits at time $t$ is given by $d=(0.8+0.04\sin \omega t)\mathrm{mm}$, where …

In a Young's double slit experiment, each of the two slits A and B , as shown in the figure, are oscillating about their fixed center and with a mean separation of 0.8 mm . The distance between the slits at time $t$ is given by $d=(0.8+0.04\sin \omega t)\mathrm{mm}$, where …

A double slit setup is shown in the figure. One of the slits is in medium 2 of refractive index $n_2$. The other slit is at the interface of this medium with another medium 1 of refractive index $n_1(\ne n_2)$. The line joining the slits is perpendicular to the interfa …

A parallel beam of light strikes a piece of transparent glass having cross section as shown in the figure below. Correct shape of the emergent wavefront will be (figures are schematic and not drawn to scale)-

In a Young's double slit experiment, the slit separation d is 0.3 mm and the screen distance D is 1m. A parallel beam of light of wavelength 600 nm is incident on the slits at angle $\alpha$ as shown in figure. On the screen, the point O is equidistant from the slits and distan …

Two coherent monochromatic point sources $S_1$ and $S_2$ of wavelength $\lambda =600\mathrm{nm}$ are placed symmetrically on either side of the center of the circle as shown. The sources are separated by a distance $d=1.8\mathrm{mm}$. This arrangement produces inte …

While conducting the Young's double slit experiment, a student replaced the two slits with a large opaque plate in the $x-y$ plane containing two small holes that act as two coherent point sources ( $S_1,S_2$ ) emitting light of wavelength 600 nm . The student mistakenly …

A Young's double slit interference arrangement with slits $S_1$ and $S_2$ is immersed in water (refractive index $=4/3$) as shown in the figure. The positions of maxima on the surface of water are given by $x^2=p^2{m}^2{\lambda }^2-d^2$, where $\lambda$ is the waveleng …

A light source, which emits two wavelengths ${\lambda }_1=400nm$ and ${\lambda }_2=600nm$, is used in a Young's double slit experiment. If recorded fringe widths for ${\lambda }_1$ and ${\lambda }_2$ are ${\beta }_1$ and ${\beta }_2$ and the number of fringes for them w …

In the Young's double slit experiment using a monochromatic light of wavelength $\lambda$, the path difference (in terms of an integer $n$ ) corresponding to any point having half the peak intensity is

Young's double slit experiment is carried out by using green, red and blue light, one color at a time. The fringe widths recorded are ${\beta }_G,{\beta }_R$ and ${\beta }_B$, respectively. Then,

Column I shows four situations of standard Young's double slit arrangement with the screen placed far away from the slits ${\mathrm{S}}_1$ and ${\mathrm{S}}_2$. In each of these cases …

In a Young's double slit experiment, the separation between the two slits is $d$ and the wavelength of the light is $\lambda$. The intensity of light falling on slit 1 is four times the intensity of light falling on slit 2 . Choose the correct choice(s).