question_answer

Given the electric field of a complete amplitude modulated wave as

Where the subscript c stands for the carrier wave and m for the modulating signal. The frequencies present in the modulated wave are                            [JEE ONLINE 19-05-2012]

A) and

B)  and

C) and                    

D) and

Correct Answer: B

Solution :

[b] The frequencies present in amplitude modulated wave are:

Carrier frequency

Upper side band frequency

Lower side band frequency