Q 12-14-195JEE MainJEE Main 2018 (15 Apr, Shift 1)Easy
The number of amplitude-modulated broadcast stations that can be accommodated in a $300\ \text{kHz}$ bandwidth for the highest modulating frequency $15\ \text{kHz}$ will be:
Answer: (D) $10$
An AM signal occupies the band $f_c - f_m$ to $f_c + f_m$, so each station needs a bandwidth of
$$2f_m = 2\times15 = 30\ \text{kHz}$$
Number of stations:
$$\frac{300}{30} = 10$$
Solution by Sreeraj P, M.Sc Physics