Wave Optics PYQs - Last 10 Years

Light of wavelength \(550\) \(nm\) falls normally on a slit of width \(22.0 \times {10^{ - 5}}\) \(cm.\) The angular position of the second minima from the central maximum will (in radians) :

A plane polarized light is incident on a polariser with its pass axis aking angle \(\theta\) with x-axis, as shown in the figure. At four different values of \(\theta ,\,\theta\) = 8o, 38o, 188o and 218o, the observed intensities are sam...

Unpolarized light of intensity I passes through an ideal polarizer A. Another identical polarizer B is placed
behind A. The intensity of light beyond B is found to be I/2. Now another identical polarizer C is placed between A and B. The int...

The angular width of the central maximum in a single slit diffraction pattern is 60°. The width of the slit is
1 \(\mu\)m. The slit is illuminated by monochromatic plane waves. If another slit of same width is made near it,
Young’s fringes...

A single slit of width 0.1 mm is illuminated by a parallel beam of light of wavelength 6000 \(\mathop A\limits^ \circ\) and diffraction bands are observed on a screen 0.5 m from the slit. The distance of the third dark band from the centr...

A single slit of width b is illuminated by a coherent monochromatic light of wavelength \(\lambda\). If the second and fourthminima in the diffraction pattern at a distance 1 m from the slit are at 3 cm and 6 cm respectively from the cent...

In a Young’s double slit experiment, slits are separated by 0.5 mm, and the screen is placed 150 cm away.
A beam of light consisting of two wavelengths, 650 nm and 520 nm, is used to obtain interference fringes
on the screen. The least dist...