If a message signal of frequency fm is amplitude modulated with a carrier signal of frequency fc and radiated through an antenna, the wavelength of the corresponding signal in air is:
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a
cfc
b
cfm
c
cfc+fm
d
cfc−fm
answer is A.
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Detailed Solution
Wave transmitted at carrier frequency =λ=cfrequencies of carrier wave⇒λ=cfc
If a message signal of frequency fm is amplitude modulated with a carrier signal of frequency fc and radiated through an antenna, the wavelength of the corresponding signal in air is: