Question

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

Answer 1

We know that wavelength of sound waves varies from $15m\text{to}15mm$ respectively. The size of slit (almost) becomes comparable to wavelength of sound, so diffraction of sound wave takes place easily. But the wavelength of visible light varies from $0.4\text{to}0.7$ micron which is very small. So, the size of most of the slits in not comparable with wavelength of visible light, due to this diffraction of light cannot take place. So, the diffraction of sound waves is more evident in daily experience than that of light wave.