Q.

Which among the following waves is used for communication by artificial satellites?

A. Micro waves
B. Radio waves
C. A. M.
D. Frequency of 1016 series
Answer» A. Micro waves
Explanation: For fixed (point-to-point) services, communications satellites provide a microwave radio relay technology complementary to that of communication cables. They are also used for mobile applications such as communications to ships, vehicles, planes and hand-held terminals, and for TV and radio broadcasting. Microwave technology is extensively used for point-to-point telecommunications (i.e., non broadcast uses).
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