Wave Optics PYQs - Last 5 Years

In Young's double slit experiment, how many maxima can be seen on a screen (including central maxima) if $d = \dfrac{5\lambda}{2}$ (where $\lambda$ is wavelength of light and $d$ is distance between the two slits).

\(\text { If } \mathrm{AB} \text { is incident plane wave front then refracted wave front in }\left(\mathrm{n}_2>\mathrm{n}_1\right)\)

Three polaroid sheets are co-axially placed as indicated in the diagram. Pass axes of the polaroids 2 and 3 make $30^{\circ}$ and $90^{\circ}$ with pass axis of polaroid sheet 1 . If $I_0$ is the intensity of the incident unpolarised light...

In Young's double slit experiment, an electron beam is used to produce interference fringes of width $\beta_1$. Now the electron beam is replaced by a beam of protons with the same experimental set-up and same speed. The fringe width obtain...

In the Young's double slit experiment, the intensity of light passing through each of the two double slits is \(2 \times 10^{-2} \mathrm{~Wm}^{-2}\). The screen-slit distance is very large in comparison with slit-slit distance. The fringe w...

An unpolarised light of intensity \(I\) is passed through two polaroids kept one after the other with their planes parallel to each other. The intensity of light emerging from second polaroid is \(\frac{I}{4}\). The angle between the pass a...

When light propagates through a given homogeneous medium, the velocities of

When a compact disc (CD) is illuminated by small source of white light coloured bands are observed. This is due to

In case of Fraunhoffer diffraction at a single slit, the diffraction pattern on the screen is correct for which of the following statements?

The fringe width for red colour as compared to that for violet colour is approximately

For light diverging from a finite point source,