Question

What frequency range is used for microwave communications, satellite and radar?
1. Low frequency: 30 kHz to 300 kHz
2. Medium frequency: 300 kHz to 3 MHz
3. Super high frequency: 3000 MHz to 30000 MHz
4. Extremely high frequency: 30000 MHz

Answer 1

Correct Answer - Option 4 : Extremely high frequency: 30000 MHz

The correct answer is "option 4".

CONCEPT:

Microwave is a form of magnetic radiation with wavelength ranging from 1 meter to 1-millimeter corresponding to frequency 300MHz to 300GHz.

So, an extremely high frequency of 30000 MHz or more is used for microwave communications, satellite, and radar.

Hence, the correct answer is "option 4".