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

$A$ plane wavefront of wavelength $6 \times 10^{-7} \,m$ is incident on a slit of width $0.4 \,mm$. $A$ convex lens of focal length $0.8 \,m$ is placed behind the slit to form a diffraction pattern on a screen. What is the linear width of the second secondary maximum in $mm$?

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

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

In a single-slit diffraction experiment,if the width of the slit is reduced,what happens to the linear width of the principal (central) maxima?

The penetration of light into the region of geometrical shadow is called: