Audio signal cannot be transmitted because

Options

A. The signal has more noise
B. The signal cannot be amplified for distance communication
C. of the transmitting antennal length
D. None of these

Answer

d

Explanation

Following are the problems which are face while transmmitting audio signals directly.
(i) these signals are relatively of short range
(ii) if every body started transmitting these low frequency signals directly, mutual interence will render all of them ineffective
(iii) size of antenna required for their efficient radiation would be larger, i.e.,about `75` kg.