Physics Communication System ( Not In Syllabus ) Telangana & AP CET Previous Year Question MCQ (Single Correct)

A message signal is super-imposed with a carrier signal. The resulting modulating signal is given by , where . The modulation index and the angular frequency fo the message signal respectively, are

A
B

C
D

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The correct answer is:
D

The given modulating signal is

Modulating signal standard equation is

Eq. (i) can also be written as,

From eq. (ii) and eq. (iii),



and )

Also,
Subtracting eq. (iv) from eq. (v),

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