List of top Physics Questions on single slit diffraction asked in CBSE CLASS XII

In a single-slit diffraction experiment, light of wavelength \(\lambda\) illuminates the slit of width \(a\). The diffraction pattern is observed on a screen kept at a distance \(D\) from the slit.
(i) Depict variation of intensity in the fringe pattern with the angular position of the fringes.
(ii) How is the linear width of central maximum affected when separation between the slit and the screen is decreased ?

A beam of light consisting of two wavelengths \(400\ \text{nm}\) and \(600\ \text{nm}\) is used to illuminate a single slit of width \(1\ \text{mm}\). Find the least distance of the point from the central maximum where the dark fringes due to both wavelengths coincide on the screen placed \(1.5\ \text{m}\) from the slit.

A beam of light consisting of two wavelengths \(400\ \text{nm}\) and \(600\ \text{nm}\) is used to illuminate a single slit of width \(1\ \text{mm}\). Find the least distance of the point from the central maximum where the dark fringes due to both wavelengths coincide on the screen placed \(1.5\ \text{m}\) from the slit.

In a single slit diffraction experiment, the aperture of the slit is 3 mm and the separation between the slit and the screen is 1.5 m. A monochromatic light of wavelength 600 nm is normally incident on the slit. Calculate the distance of (I) first order minimum, and (II) second order maximum, from the centre of the screen.