Wave Optics

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

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...

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 \mat...

A single slit diffraction experiment is performed to determine the slit width using the equation, $\frac{b d}{D}=$ $m \lambda$, where $b$ is the slit width, $D$ the shortest distance between the slit and the screen, $d$ the distance between...

Consider a system of three connected strings, $S_1, S_2$ and $S_3$ with uniform linear mass densities $\mu$ $\mathrm{kg} / \mathrm{m}, 4 \mu \mathrm{~kg} / \mathrm{m}$ and $16 \mu \mathrm{~kg} / \mathrm{m}$, respectively, as shown in the fi...

The maximum speed in $\mu \mathrm{m} / \mathrm{s}$ at which the $8^{\text {th }}$ bright fringe will move is ______.

The $8^{\text {th }}$ bright fringe above the point $\mathrm{O}$ oscillates with time between two extreme positions. The separation between these two extreme positions, in micrometer $(\mu \mathrm{m})$, is _________ .

A point source $\mathrm{S}$ emits unpolarized light uniformly in all directions. At two points $\mathrm{A}$ and $\mathrm{B}$, the ratio $r=I_A / I_B$ of the intensities of light is 2 . If a set of two polaroids having $45^{\circ}$ angle bet...

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 $n_{1}\left(\neq n_{2}\right)$. The line jo...

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 1 m. 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...

Two coherent monochromatic point sources \({S_1}\) and \({S_2}\) of wavelength \(\lambda = 600\,nm\) are placed symmetrically on either side of the center of the circle as shown. The sources are separated by a distance \(d=1.8\) \(mm.\) Th...

While conducting the Young's double slit experiment, a student replaced the two slits with a large opaque plate in the XY-plane containing two small holes that act as two coherent point sources (S1, S2) emitting light of wavelength 600 mm. ...

A Young's double slit interference arrangement with slits S1 and S2 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 x2 = p2m2\(\lambda\)2 \(-\) d2, where $$\...

A light source, width emits two wavelengths \(\lambda\)1 = 400 nm and \(\lambda\)2 = 600 nm, 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 numb...

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 colour at a time. The fringe widths recorded are \(\beta\)G, \(\beta\)R and \(\beta\)B, respectively. Then,

A light ray travelling in glass medium is incident on glass-air interface at an angle of incidence \(\theta\). The reflected (R) and transmitted (T) intensities, both as function of \(\theta\), are plotted. The correct sketch is

Column I shows four situations of standard Young's double slit arrangement with the screen placed far away from the slits S\(_1\) and S\(_2\). In each of these cases, S\(_1\)P\(_0\) = S\(_2\)P\(_0\), S\(_1\)P\(_1\) \(-\) S\(_2\)P\(_1\) = $$...

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 corre...

Speed of the light is