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Given the electric field of a complete amplitude modulated wave as E = i E_c (1+ E_m E_c _m t ) _c t Where the subscript c stands for the carrier wave and m for the modulating signal. The frequencies present in the modulated wave are

Options

  1. A_c and _c^2+ _m^2
  2. B_c, _c+ _m and _c- _m
  3. C_c and _m
  4. D_c and _c _m

Correct answer

B. _c, _c+ _m and _c- _m

Step-by-step solution

The frequencies present in amplitude modulated wave are : Carrier frequency = _c Upper side band frequency = _c+ _m Lower side band frequency = _c- _m .

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