A 3 kHz message signal amplitude-modulates a 1.5 MHz carrier. The bandwidth of the AM wave is:
Options

Question

A 3 kHz message signal amplitude-modulates a 1.5 MHz carrier. The bandwidth of the AM wave is:

G1 Physics · Accepted Answer

For conventional amplitude modulation, bandwidth = 2f(m) Given, f(m) = 3 kHz Therefore, bandwidth = 2×3 = 6 kHz Hence option A follows.