In the experiment of diffraction due to a single slit,if the slit width is decreased,the width of the central maximum

Describe the simplest experiments to observe a diffraction pattern.

$A$ beam of light of $\lambda = 600 \, nm$ from a distant source falls on a single slit $1 \, mm$ wide and the resulting diffraction pattern is observed on a screen $2 \, m$ away. The distance between the first dark fringes on either side of the central bright fringe is:

When the frequency of the light used is changed from $4 \times 10^{14} \ s^{-1}$ to $5 \times 10^{14} \ s^{-1}$, the angular width of the principal (central) maximum in a single slit Fraunhofer diffraction pattern changes by $0.6 \ \text{radian}$. What is the width of the slit? (Assume that the experiment is performed in vacuum.)

The condition for obtaining secondary maxima in the diffraction pattern due to a single slit is:

The bending of a beam of light around the corners of obstacles is called