____ are the range of frequencies above 20 kilohertz through which an electromagnetic signal can be radiated into space.
A)Infrared frequencies
B)Radio frequencies
C)Wireless frequencies
D)Spectrum frequencies

Question

Quizplus · Accepted Answer

The range of frequencies above 20 kilohertz through which an electromagnetic signal can be radiated into space is known as radio frequencies. Infrared frequencies are below 20 kilohertz and are not used for radiating signals into space. Wireless frequencies are a general term and can refer to any frequency used for wireless communication, including radio frequencies. The term "spectrum frequencies" is not commonly used and is not a specific range of frequencies.

____ Are the Range of Frequencies Above 20 Kilohertz Through