Wave Optics PYQs - Last 10 Years

In interference and diffraction, the light energy is redistributed. If it reduces in one region, producing a dark fringe, it increases in another region, producing a bright fringe.
A. As there is no gain or loss of energy, these phenomena a...

In Young's double slit experiment, using monochromatic light of wavelength $\lambda$, the intensity of light at a point on the screen where the path difference is $\lambda$, is $K$ units. The intensity of light at a point where the path dif...

The intensity of transmitted light when a polaroid sheet, placed between two crossed polaroids at $22.5^{\circ}$ from the polarization axis of one of the polaroids, is ( $I 0_0$ is the intensity of polarised light after passing through the ...

An unpolarized light beam travelling in air is incident on a medium of refractive index 1.73 at Brewster's angle. Then

A beam of unpolarized light of intensity I0 is passed through a polaroid A, then through another polaroid B,
oriented at \(60^\circ\) and finally through another polaroid C, oriented at 45\(^\circ\) relative to B as shown. The intensity of
...

Interference pattern can be observed due to superposition of the following waves:
A. \(y=a \sin \omega t\)
B. \(y=a \sin 2 \omega t\)
C. \(y=a \sin (\omega t-\phi)\)
D. \(y=a \sin 3 \omega t\)
Choose the correct answer from the options give...

Two slits in Young's double slit experiment are \(1.5 \mathrm{~mm}\) apart and the screen is placed at a distance of \(1 \mathrm{~m}\) from the slits. If the wavelength of light used is \(600 \times 10^{-9} \mathrm{~m}\) then the fringe sep...

An unpolarised light beam strikes a glass surface at Brewster's angle. Then

If the monochromatic source in Young's double slit experiment is replaced by white light, then

Which set of colours will come out in air for a situation shown in figure?

For Young's double slit experiment, two statements are given below :
Statement I : If screen is moved away from the plane of slits, angular separation of the fringes remains constant.
Statement II : If the monochromatic source is replaced b...

After passing through a polariser a linearly polarised light of intensity I is incident on an analyser making an angle of 30\(^\circ\) with that of the polariser. The intensity of light emitted from the analyser will be

If the screen is moved away from the plane of the slits in a Young's double slit experiment, then the :

In a Young's double slit experiment, a student observes 8 fringes in a certain segment of screen when a monochromatic light of 600 nm wavelength is used. If the wavelength of light is changed to 400 nm, then the number of fringes he would o...

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 :

Assume that light of wavelength 600 nm is coming from a star. The limit of resolution of telescope whose objective has a diameter of 2 m is :

In a double slit experiment, when light of wavelength 400 nm was used, the angular width of the first minima formed on a screen placed 1m away, was found to be 0.2o. What will be the angular width of the first minima, (\(\mu\)water = 4/3) ...

Unpolarised light is incident from air on a
plane surface of a material of refractive index
\(\mu\). At a particular angle of incidence i, it is
found that the reflected and refracted rays
are perpendicular to each other. Which of
the foll...

In Young’s double slit experiment the
separation d between the slits is 2 mm, the
wavelength \(\lambda\) of the light used is 5896 \(\mathop A\limits^0\) and
distance D between the screen and slits is
100 cm. It is found that the angular ...

Two polaroids P1 and P2 are placed with their axis perpendicular to each other. Unpolarised light \(I\)0 is incident on P1. A third polaroid P3 is kept in between P1 and P2 such that its axis makes an angle 45o with that of P1. The intensit...

The ratio of resolving powers of an optical microscope for two wavelength \(\lambda\)1 = 4000 \(\mathop A\limits^ \circ\) and \({\lambda _2}\) = 6000 \(\mathop A\limits^ \circ\) is

Young's double slit experiment is first performed in air and then in a medium other than air. It is found that 8th bright fringe in the medium lies where 5th dark fringe lies in air. The refractive index of the medium is nearly