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Find the true statement. (a)The value of the harmonic is equal to its contribution to the waveform

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in Physics – Class 12 by (135k points)
Find the true statement.

(a) The value of the harmonic is equal to its contribution to the waveform

(b) The value of the harmonic is directly proportional to its contribution to the waveform

(c) The value of the harmonic is independent of its contribution to the waveform

(d) The value of the harmonic is inversely proportional to its contribution to the waveform

I had been asked this question by my school principal while I was bunking the class.

My question is from Communication Systems topic in portion Communication Systems of Physics – Class 12

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Right answer is (d) The value of the harmonic is inversely proportional to its contribution to the waveform

The explanation is: When the bandwidth is large enough to accommodate a few harmonics, the information is not lost and the rectangular signal is more or less recovered. This is so because the higher the harmonic, the less is its contribution to the waveform. Therefore, the value of the harmonic is inversely proportional to its contribution to the waveform.

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