Why do radio and TV waves have less diffraction?

Radio and TV waves have less diffraction primarily due to their larger wavelengths. Diffraction refers to the bending of waves around obstacles or through openings. The extent to which a wave diffracts depends on the relationship between the wavelength of the wave and the size of the obstacle or opening it encounters.

When the wavelength is large compared to the size of the opening or obstacle, the wave is less affected by these barriers and can pass around them more easily. In contrast, waves with shorter wavelengths (such as visible light) tend to diffract more when they encounter small openings or obstacles, resulting in a greater degree of bending.

This understanding leads to the conclusion that radio and TV waves, with their relatively long wavelengths, will experience less diffraction, allowing them to travel further and retain signal quality better in various environments compared to waves with shorter wavelengths.

The other options do not accurately reflect the fundamental reason for the diffraction characteristics observed in radio and TV waves.