Question:
Beyond which frequency, the ionosphere bends any incident electromagnetic radiation but do not reflect it back towards the earth?
Beyond which frequency, the ionosphere bends any incident electromagnetic radiation but do not reflect it back towards the earth?
Updated On: Jul 12, 2022
- 50MHz
- 40MHz
- 30MHz
- 20MHz
Hide Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
The ionosphere can reflect electromagnetic waves of frequency less than $40\, MHz$ but do not reflect electromagnetic waves of frequency more than $40 \,MHz$.
Was this answer helpful?
0
0
Top Questions on communication systems
- VHF waves travel as _______.
- AP PGECET - 2025
- Electronics and Communication Engineering
- communication systems
- Commercial band for FM broadcasting is ________.
- AP PGECET - 2025
- Electronics and Communication Engineering
- communication systems
- The movement of charge carriers due to charge carrier concentration gradient is called ________.
- AP PGECET - 2025
- Electronics and Communication Engineering
- communication systems
- To save transmitted power, the carrier of an AM signal obtained by sinusoidal modulation to a depth of modulation equal to 1, has been recovered. The percentage saving in power is________.
- AP PGECET - 2025
- Electronics and Communication Engineering
- communication systems
- A narrow band FM signal is generated using a phase modulator. The maximum deviation at the output of a phase modulator is about________.
- AP PGECET - 2025
- Electronics and Communication Engineering
- communication systems
View More Questions
Concepts Used:
Communication Systems
A system that describes the information exchange between two points is called the communication system. The transmission and reception process of information is called communication. The major elements of communication are such as:
- The Transmitter of information
- Channel or medium of communication
- The Receiver of information
Examples Of Communication Systems:
The following are the examples of communication systems:
- Internet
- Public Switched Telephone network
- Intranet and Extranet
- Television
Types Of Communication Systems:
Turning on Signal specification or technology, the communication system is categorized as follows:
- Analog technology communicates data as electronic signals of differing frequencies or amplitude. For instance Broadcast and telephone transmission.
- In Digital technology, the data are created and processed in two states: High (represented as 1) and Low (represented as 0). Also this technology stores and transmits data in the form of 1's and 0's.
Elements of a Communication System:
