List of top Physics Questions on Diffraction asked in MHT CET

Assuming human pupil to have radius of $0.25\text{ cm}$ and comfortable viewing distance of $25\text{ cm}$ , the minimum separation between the two objects that human eye can resolve at $500\text{ nm}$ wavelength is nearly}

A beam of light having wavelength $5400\text{ \AA}$ from a distant source falls on a single slit $0.96\text{ mm}$ wide and the resultant diffraction pattern is observed on a screen $2\text{ m}$ away. What is the distance between the first dark fringe on either side of the central bright fringe?

In Fraunhofer diffraction pattern, slit width is 0.2 mm and screen is at 2m away from the lens. If wavelength of light used is 5000 $\text{A}^\circ$ then the distance between the first minimum on either side of the central maximum is ($\theta$ is small and measured in radian)

In diffraction experiment, from a single slit, the angular width of central maximum does NOT depend upon