The complex wave whose frequency spectrum is shown in the figure is made up of waves whose frequencies are
A) 1, 2, and 4.
B) 100, 200, and 400.
C) 100, 100, and 400.
D) 1 and 4.
E) 100 and 400.

Question

The complex wave whose frequency spectrum is shown in the figure is made up of waves whose frequencies are
A) 1, 2, and 4. 
B) 100, 200, and 400. 
C) 100, 100, and 400. 
D) 1 and 4. 
E) 100 and 400.

Quizplus · Accepted Answer

The frequency spectrum shows peaks at 100 Hz, 200 Hz, and 400 Hz. Therefore, the complex wave is made up of waves with frequencies of 100 Hz, 200 Hz, and 400 Hz.

The Complex Wave Whose Frequency Spectrum Is Shown in the Figure