JEE Main 2013 Physics question
Not in JEE or NEET syllabus
If a carrier wave c(t) = A sin t is amplitude modulated by a modulator signal m(t) = A sin t then the equation of modulated signal and its modulation index are respectively
Answer: (3)
Solution
C_m = (A + A\sin\omega_mt)\sin\omega_ct = A(1 + \sin\omega_mt)\sin\omega_ct, and the modulation index , option (3).