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.

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.
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1 Answer

Answer :

(A) Electromagnetic waves with frequencies from 300 GHz to 400 THz.
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