Question

For TV transmission, the frequency range employed is:
A. 30-300 MHz
B. 30-300 Ghz
C. 30-300 KHz
D. 30-300 Hz

Answer 1

Tv transmission is a broadcast communication system. Here, we have only one transmitter and more than one receiver. The broadcast system for tv transmission uses the sky wave propagation which is a long distance communication.

Complete step-by-step answer :
Communication can be defined as the process of transmission of information from one point to another. For a communication system to build we need a transmitter and a receiver. We have two types of communication systems which are point to point communication systems and another is broadcast.
In a broadcast system we use one transmitter and more than one receiver. A transmitter processes the incoming signal and makes it suitable for transmission through a channel.
A receiver receives the signal and extracts the message or contents from the signal at signal output.
For different broadcasting systems we have different frequency bands. For standard AM broadcast the frequency band is 540-1600 kHz. For FM broadcast the frequency range is from 88-108 MHz. For television broadcasting systems we have a different range of frequencies depending on the type over 50 MHz to 900 MHz.
Sky wave propagation is used by short wave broadcast services in the frequency range of a few MHz to 40 MHz, long distance communication can be achieved by ionospheric reflection of radio waves. This is called sky wave propagation.
Television and satellite systems use space wave mode of propagation.
So, from the above discussion we can say that the frequency range for tv transmission is in the MHz range.

The correct option will be (A) 30-300 MHz

Note : In a point to point communication system we have only one sender and receiver. In broadcast communication we have one sender with more than one receiver. So, with the broadcast system we can send one signal to more than one receiver.