Microwave signals:
A. are lower in frequency than cell phones
B. are lower in frequency than fiber optics.
C. are lower in frequency than paging devices.
D. are lower in frequency than short-wave radio.
Answer:B
Microwave signals:
A. are lower in frequency than cell phones B. are lower in frequency than fiber optics. C. are lower in frequency than paging devices. D. are lower in frequency than short-wave radio.