CWNA-109 · Question #35
As an RF wave propagates through space, the wave front experiences natural expansion that reduces its signal strength in an area. What describes the rate at which this expansion happens?
The correct answer is C. Inverse square law. The inverse square law states that the signal strength of an RF wave is inversely proportional to the square of the distance from the source. This means that as the distance from the transmitter increases, the signal strength decreases rapidly.
Question
As an RF wave propagates through space, the wave front experiences natural expansion that reduces its signal strength in an area. What describes the rate at which this expansion happens?
Options
- AFresnel zone thinning
- BOhm's law
- CInverse square law
- DMU-MIMO
How the community answered
(49 responses)- A4% (2)
- B2% (1)
- C92% (45)
- D2% (1)
Explanation
The inverse square law states that the signal strength of an RF wave is inversely proportional to the square of the distance from the source. This means that as the distance from the transmitter increases, the signal strength decreases rapidly.
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