Q.

Waves that are required for long distance wireless communication are –

A. Infrared rays
B. Ultraviolet rays
C. Radio waves
D. Microwaves
Answer» C. Radio waves
Explanation: Wireless communication is the transfer of information between two or more points that are not connected by an electrical conductor. With radio waves distances can be short, such as a few metres for television remote control, or as far as thousands or even millions of kilometres for deep-space radio communications.
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