True or False: Infrared frequencies are primarily used for wireless communication systems.

The statement is true because infrared frequencies are indeed utilized in various wireless communication systems. Infrared communication operates within the infrared spectrum, which is part of the electromagnetic spectrum and includes wavelengths that are longer than visible light but shorter than microwave radiation.

Infrared technology is widely used for short-range communication applications, such as remote controls, wireless data transmission between devices (like infrared ports in computers and mobile devices), and in certain types of wireless networks. This frequency range is particularly effective for point-to-point communication where line-of-sight is maintained, allowing the transfer of information without interference from other electromagnetic signals.

The correct choice reflects the ongoing importance of infrared frequencies in facilitating wireless communication, especially in scenarios where other methods, such as radio frequencies, may not be ideal due to interference or range issues.