JEE PYQ: Communication System Question 15
Question 15 - 2021 (25 Feb 2021 Shift 2)
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:
(1) $\frac{c}{f_c}$
(2) $\frac{c}{f_c + f_m}$
(3) $\frac{c}{f_m}$
(4) $\frac{c}{f_c - f_m}$
Show Answer
Answer: (4)
Solution
The wavelength of the corresponding signal in air $\lambda = \frac{c}{f_c}$.
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