1.

Amplitude modulated wave is represented by VAM = 10[1 + 0.4 cos(2π x 104t)] cos(2π x 107 t).The total bandwidth of the amplitude modulated wave is :(A) 10 kHz(B) 20 MHz(C) 20 kHz(D) 10 MHz

Answer»

Correct option is (C) 20 kHz

Bandwidth = 2 fm

= 2 x 10Hz = 20 x 10Hz

= 20 KHz



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