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in Physics by (122k points)
An audio signal of 15 kHz frequency cannot be transmitted over long distance without modulation because.
A. the size of the required antenna would be least 5 km which is not conveient.
B. the audio signal can not be trasmitted through sky waves.
C. effective power transmitted would be very low. If the size of the antenna is less than 5 km.
D. all of these

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1 Answer

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by (122k points)
Correct Answer - D

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