(D) Television signals are transmitted as space waves (line-of-sight propagation). Because the earth is curved,the signal cannot follow the curvature

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The surface of earth is curved like a sphere

(D) Television signals are transmitted as space waves (line-of-sight propagation). Because the earth is curved,the signal cannot follow the curvature of the earth beyond the horizon. The transmission is limited by the line-of-sight distance between the transmitting antenna and the receiving antenna. Therefore,the curvature of the earth prevents the reception of signals at large distances.

Class 12 Physics Communication Communication

Easy

Television signals on earth cannot be received at distances greater than $100\, km$ from the transmission station. The reason behind this is that

A
The receiver antenna is unable to detect the signal at a distance greater than $100\, km$
B
The $TV$ programme consists of both audio and video signals
C
The $TV$ signals are less powerful than radio signals
D
The surface of earth is curved like a sphere

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Television signals on earth cannot be received at distances greater than $100\, km$ from the transmission station. The reason behind this is that

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