Physics · 2019
JEE Main · 12 April 2019, Shift 2 · Q28
In an amplitude modulator circuit, the carrier wave is given by, C ( t )=4 sin (20000 π t ) while modulating signal is given by, m ( t )=2 sin (2000…
In an amplitude modulator circuit, the carrier wave is given by,
$\displaystyle \mathrm{C}(\mathrm{t})=4 \sin (20000 \pi \mathrm{t})$ while modulating signal is given by, $\displaystyle \mathrm{m}(\mathrm{t})=2 \sin (2000 \pi \mathrm{t})$. The values of modulation index and lower side band frequency are:
Official answer
(4)
0.$\displaystyle 5$ and $\displaystyle 9$ kHz
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JEE Main 2019 Physics question, with the answer from NTA’s final answer key. Where our answers come from.