Radio waves and microwaves are used in which of the following communications?

Wireless
257
Fiber optics
65
IP Telephony
63
Image sensor
31
The most common wireless technologies use radio waves. With radio waves distances can be short, such as a few meters for Bluetooth or as far as millions of kilometers for deep-space radio communications. Somewhat less common methods of achieving wireless communications include the use of other electromagnetic wireless technologies, such as light, magnetic, or electric fields or the use of sound.
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