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Sinusoidal carrier voltage of frequency 1.5 MHz and amplitude 50 V is amplitude modulated by sinusoidal voltage of frequency 10 kHz producing 50% modulation. The lower and upper side-band frequency in kHz are

A

`1490,1510`

B

`1510 , 1490 `

C

`(1)/( 1490) , (1)/(1510)`

D

`(1)/(1510), (1)/(1490)`

Text Solution

Verified by Experts

The correct Answer is:
A
Here , `f_c = 1.5 MHz = 1500 kHz, f_m = 10 kHz `
`:.` Low side band frequency
`= f_c - f_m = 1500 kHz - 10 kHz = 1490 kHz `
Upper side band frequency
`= f_c + f_m = 1500 kHz + 10 kHz = 1510 kHz `
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