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An amplitude modulated wave is represented by

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An amplitude modulated wave is represented by,

vAM = 4 (1 + 0.2 sin 314 t) sin (314 x 102 t)

The bandwidth of the amplitude modulated wave is equal to,

(1) 50 Hz

(2) 1000 Hz

(3) 314 Hz

(4) 314 x 102

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(2) 1000 Hz

According to the expression, 

Frequency of the modulating wave 

Frequency of the carrier wave

Therefore, bandwidth 2fm = 100 Hz

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