Physics · 2022
JEE Main · 28 June 2022, Shift 2 · Q50
Amplitude modulated wave is represented by V_AM =10[1+0.4 cos (2 π × 10^4 t )] cos (2 π × 10^7 t ). The total bandwidth of the amplitude modulated…
Amplitude modulated wave is represented by
$\displaystyle \mathrm{V}_{\mathrm{AM}}=10\left[1+0.4 \cos \left(2 \pi \times 10^4 \mathrm{t}\right)\right] \cos \left(2 \pi \times 10^7 \mathrm{t}\right)$. The total bandwidth of the amplitude modulated wave is :
Official answer
(3)
$\displaystyle 20$ kHz
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JEE Main 2022 Physics question, with the answer from NTA’s final answer key. Where our answers come from.