# Which of the following is the disadvantage of FM over AM?

$\begin {array} {1 1} (a)\;Larger\: band \: width\: requirement & \quad (b)\;Larger\: noise \\ (c)\;Higher \: modulation\: power & \quad (d)\;Low\: efficiency \end {array}$

Disadvantage of FM over AM is that FM requires larger band width, much wider channel about 15 times as compared to AM.
Ans : (a)
edited Feb 22