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In an amplitude modulated wave, message wave frequency fm and carrier wave frequency fc. Find out wavelength of amplitude modulated wave.

(1) $c\over f_c$

(2) $c\over f_m$

(3) $c\over f_c+f_m$

(4) $c\over f_c-f_m$

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Amplitude modulation, Communication systems

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Ans. (1) $c\over f_c$

Sol. Using theory $\lambda={c\over f_c}$

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