Which of the following statements is not true with respect to microwav – McqOptions

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1.	Which of the following statements is not true with respect to microwaves?
A.	Electromagnetic waves with frequencies from 300 GHz to 400 THz.
B.	Propagation is line-of-sight.
C.	Very high-frequency waves cannot penetrate walls.
D.	Use of certain portions of the band requires permission from authorities.
Answer» B. Propagation is line-of-sight.

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