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A signal wave of frequency 12kHZ is m...

A signal wave of frequency 12kHZ is modulated with a carrier wave of frequency 2.51 MHz . The upper and lower side band frequencies are respectively

A

A)2512 kHz and 2508 kHz

B

B)2522 kHz and 2488 kHz

C

C)2502 kHz and 2498 kHz

D

D)2522 kHz and 2498 kHz

Text Solution

Verified by Experts

The correct Answer is:
D
Upper side band (USB) frequency `=f_(c)+f_(m)`
`=(2.51)MHz+(12)kHz`
`=(2510+12)kHz`
`2522kHz`
Lower side band (LSB) frequency `f_(c)-f_(m)`
`=(2.51)MHz-(12)kHz`
`=(2510-12)kHz`
`=2498kHz`
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