JEE Main 2019 Physics question
Not in JEE or NEET syllabus
In an amplitude modulator circuit, the carrier wave is given by, C(t) = 4 sin(20000πt) while modulating signal is given by, m(t) = 2 sin(2000πt). The values of modulation index and lower side band frequency are:
Answer: (D)
Solution
TOPIC NOT IN SYLLABUS: Communication Systems. μ = 2/4; f − f = 10 − 1 = 9 kHz.