What frequency range is used for microwave communications, satellite and radar?
- A. Low frequency: 30 kHz to 300 kHz
- B. Medium frequency: 300 kHz to 3 MHz
- C. Super high frequency: 3000 MHz to 30000 MHz
- D. Extremely high frequency: 30000 kHz
Answer: C. Super high frequency: 3000 MHz to 30000 MHz
Explanation: Microwaves cover 300 MHz to 300 GHz. SHF (3-30 GHz) falls within this range.