An audio signal of 15000 Hz modulates a carrier generated by a tank circuit containing 1 nF capacitor and 10 \(\mu\)henry inductor. Calculate the frequency of first pair of side bands.
Answer & explanation
Correct answer: option 3
\(\nu\)SB = \(\nu\)c +- \(\nu\)m
\(\nu\)c = \(\frac{1}{2\pi \sqrt {LC}}\)
\(\nu\)m = 15000 Hz = 15 kHz
L = 10 \(\mu\)henry ; C = 1 nF
\(\nu\)SB = [1592 +- 15 ] kHz = 1607 kHz or 1577 kHz