Diffraction effects are easier to notice in the case of sound waves than in the case of light waves because

$A$ screen is placed at a distance $50\,cm$ from a single slit,which is illuminated with light of wavelength $690\,nm$. If the distance between the first and third minima is $3.00\,mm$,what is the width of the slit (in $,mm$)?

The box of a pinhole camera,of length $L$,has a hole of radius $a$. It is assumed that when the hole is illuminated by a parallel beam of light of wavelength $\lambda$,the spread of the spot (obtained on the opposite wall of the camera) is the sum of its geometrical spread and the spread due to diffraction. The spot would then have its minimum size (say $b_{min}$) when

How will the diffraction pattern change when yellow light is replaced by blue light? The fringes will be

Why is the diffraction of sound waves more evident in daily experience than that of light waves?

How will the diffraction pattern change when yellow light is replaced by blue light? The fringe will be :-