A message signal of frequency 5kHz is used to modulate a carrier...

A message signal of frequency

5kHz

is used to modulate a carrier signal of frequency

2MHz

. The bandwidth for amplitude modulation is:

Options

A $5kHz$
B $20kHz$
C $10kHz$
D $2 . 5kHz$

Correct answer

C. $10kHz$

Step-by-step solution

We have,

Message frequency ${f}_{m} = 5kHz$ and carrier wave frequency ${f}_{c} = 2MHz= 2000KHz$

The resultant signal will have bandwidth of frequency given by $\left[$ \left({f}_{c} + {f}_{m}\right) $- \left({f}_{c} - {f}_{m}\right)$ \right] $$ = [ ( 2000 + 5 ) - ( 2000 - 5 ) ] kHz $$ = 10kHz $.Thus, bandwidth for amplitude modulation is$ 10kHz.

Practice Communication System on Quantrex Academy →

More from Communication System

The height of transmitting antenna is 180m and the height of the receiving antenna is… JEE Main 2023 To radiate EM signal of wavelength λ with high efficiency, the antennas should have a… JEE Main 2023 Match List-I with List-II List-I (Layer of atmosphere) List-II (Approximate height over… JEE Main 2023 The amplitude of 15 ( 1000 ) is modulated by 10 ( 4 ) signal. The amplitude modulated… JEE Main 2023 In satellite communication, the uplink frequency band used is: JEE Main 2023 A transmitting antenna is kept on the surface of the earth. The minimum height of… JEE Main 2023 A massage signal of frequency 3kHz is used to modulate a carrier signal of frequency 1 .… JEE Main 2023 A carrier wave of amplitude 15V is modulated by a sinusoidal base band signal of… JEE Main 2023 Full Communication System list All JEE Main PYQs