A signal of 5 kHz frequency is amplitude modulated on a...

A signal of $5 \mathrm{kHz}$ frequency is amplitude modulated on a carrier wave of frequency $2 \mathrm{MHz}$. The frequencies of the resulting signal is/are [2015] (A) $2005 \mathrm{kHz}$, and $1995 \mathrm{kHz}$ (B) $2005 \mathrm{kHz}, 2000 \mathrm{kHz}$ and $1995 \mathrm{kHz}$ (C) $2000 \mathrm{kHz}$ and $1995 \mathrm{kHz}$ (D) $2 \mathrm{MHz}$ only

A signal of $5 \mathrm{kHz}$ frequency is amplitude modulated on a carrier wave of frequency $2 \mathrm{MHz}$. The frequencies of the resulting signal is/are [2015]
(A) $2005 \mathrm{kHz}$, and $1995 \mathrm{kHz}$
(B) $2005 \mathrm{kHz}, 2000 \mathrm{kHz}$ and $1995 \mathrm{kHz}$
(C) $2000 \mathrm{kHz}$ and $1995 \mathrm{kHz}$
(D) $2 \mathrm{MHz}$ only

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Amplitude Modulation

Amplitude modulation is a technique where the amplitude of a high-frequency carrier wave is varied in proportion to the instantaneous amplitude of a lower-frequency information signal. This method allows the transmission of the information signal over long distances by embedding it into a carrier signal that can effectively propagate through the communication medium.

Carrier Frequency

The carrier frequency is the fixed high-frequency component used in modulation schemes to convey the information signal. Its primary role is to serve as the baseline frequency that, when modulated, produces various spectral components. The carrier remains present in the transmitted signal and is central to the demodulation process at the receiver.

Sidebands

Sidebands are the frequency components that appear above and below the carrier frequency as a result of the modulation process. They directly correspond to the sum and difference of the carrier frequency and the modulating signal frequency. The upper sideband contains the frequencies obtained by adding the modulating frequency to the carrier frequency, while the lower sideband consists of frequencies obtained by subtracting the modulating frequency from the carrier frequency.

Transcript

Please give Ace some feedback