Physics · 2017
JEE Main · 8 April 2017, Shift 1 · Q28
A signal of frequency 20 kHz and peak voltage of 5 Volt is used to modulate a carrier wave of frequency 1.2 MHz and peak voltage 25 Volts. Choose the…
A signal of frequency $\displaystyle 20$ kHz and peak voltage of $\displaystyle 5$ Volt is used to modulate a carrier wave of frequency $\displaystyle 1.2$ MHz and peak voltage $\displaystyle 25$ Volts. Choose the correct statement.
Official answer
(4)
Modulation index $\displaystyle =0.2$, side frequency bands are at $\displaystyle 1220$ kHz and $\displaystyle 1180$ kHz
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JEE Main 2017 Physics question, with the answer from NTA’s final answer key. Where our answers come from.