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JEE Main202310 Apr 2023Evening ShiftPhysicsCommunication SystemActual

A massage signal of frequency 3 kHz is used to modulate a carrier signal of frequency 1 . 5 MHz . The bandwidth of the amplitude modulated wave is

Options

  1. A  6   MHz
  2. B6   kHz
  3. C3   MHz  
  4. D3   kHz

Correct answer

B. 6   kHz

Step-by-step solution

The relation between bandwidth and the signal frequency is given by Bandwidth = 2 ×   signal   frequency       . . . 1 Substitute the values of the known parameter into equation (1) to calculate the required bandwidth. Bandwidth =   2   ×   3   kHz =   6   kHz

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