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

Options

A. 1.003 MHz and 0.997 MHz
B. 1.954 MHz and 2.0 MHz
C. 40.5 MHz and 27.6 MHz
D. 5 MHz and 0.997 MHz

Answer

A

Explanation

The frequencies of the side band will be 1.003 MHz and 0.997 MHz.
`1 xx 10^(6) pm 3 xx 10^(3)=(1.003 mHz, 0.997 mHz )