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A speech signal of 3 kHz is used to modu...

A speech signal of `3 kHz` is used to modulate a carrier signal of frequency `1 MHz`, using amplitude modulation. The frequencies of the side bands will be

A

`1.003 MHz` and `0.997 MHz`

B

`3001 kHz` and `2997 kHz`

C

`1003 kHz` and `1000 kHz`

D

`1 MHz` and `0.997 MHz`

Text Solution

Verified by Experts

The correct Answer is:
A
the frequencies of side bands are
`LSB=f_(c)-f_(m)` (Lower side Band)
`USB=f_(c)+f_(m)` (Upper side Band)
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