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Frequency of a Wave

Which of the ...

Question

Which of the following is incorrect?

A

Our headphones are a kind of transducer

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B

Loss of strength of a signal while propagation is called attenuation

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C

Original low frequency message can be tranmitted to long distance

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D

Noise refers to unwanted signals that tend to disturb transmission

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Solution

The correct option is C Original low frequency message can be tranmitted to long distance
Original low frequency message cannot be tranmitted to long distance, because the losses are too much during the transmission. Hence we modulate it into higher frequency carrier and send it.

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