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JEE Main202125 Feb 2021Evening ShiftPhysicsCommunication SystemActual

If a message signal of frequency f m is amplitude modulated with a carrier signal of frequency f c and radiated through an antenna, the wavelength of the corresponding signal in air is

Options

  1. Ac f c - f m
  2. Bc f m
  3. Cc f c
  4. Dc f c + f m

Correct answer

C. c f c

Step-by-step solution

Given frequency of massage signal = f m frequency of carrier signal = f c the wavelength of the corresponding signal in air is ⇒ λ = c f c

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