Bandwidth requirement for Amplitude modulated wave is:

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KVS TGT WET (Work Experience Teacher) 23 Dec 2018 Official Paper
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  1. 2fm, where fm is the highest modulating frequency
  2. 2f+ fc, where fc is the carrier frequency 
  3. 2nfm where n is the number of side bands
  4. fc + fm

Answer (Detailed Solution Below)

Option 1 : 2fm, where fm is the highest modulating frequency
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Detailed Solution

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The frequency spectrum of an Amplitude Modulated wave is given by:

 

Bandwidth is the difference between the highest frequency component and the lowest frequency component, i.e.

Bandwidth = (fc + fm) - (fc - fm) Hz = 2fm

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