Amplitude modulated wave |Communication System|JEE-MAIN 2022

JEE MAIN 2022

28-06-22 (S2)

Question

Amplitude modulated wave is represented by $V_{R M}=10\left[1+0.4 \cos \left(2 \pi \times 10^4 t\right)\right] \cos \left(2 \pi \times 10^7 t\right)$. The total bandwidth of the amplitude modulated wave is

Select the correct option:

A) 10 kHz (B) 20 MHz (C) 20 kHz (D) 10 MHz

10 MHz

20 kHz

20 MHz

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

$\begin{aligned} & \text { Bandwidth }=2 \mathrm{fm} \\ & =2 \times 10^4 \mathrm{~Hz}=20 \times 10^3 \mathrm{~Hz} \\ & =20 \mathrm{kHz}\end{aligned}$

Question Tags

JEE Main

Physics

Easy

Start Preparing for JEE with Competishun

Report Issue