Ask Questions, Get Answers

Want to ask us a question? Click here
Browse Questions
Home  >>  JEEMAIN and AIPMT  >>  Physics  >>  Class12  >>  Communication Systems
0 votes

An audio signal given by $20\sin(2\pi \times 4000t)$ is used for modulating carrier wave given by $40\sin (2\pi\times 400000t)$.The frequency spectrum of modulated wave

$\begin{array}{1 1}(a)\;\text{430-460KHz}\\(b)\; \text{396-404KHz}\\(c)\;\text{400-404KHz}\\(d)\;\text{396-400KHz}\end{array}$

Can you answer this question?

1 Answer

0 votes
Lower band is $400000-4000=396$KHz
Upper band is $400000+4000=404$KHz
Hence (b) is the correct answer.
answered Mar 17, 2014 by sreemathi.v

Related questions

Ask Question
student study plans
JEE MAIN, CBSE, AIPMT Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App