JAMB - Physics (1981 - No. 20)
All of the following frequencies are overtones of 320 Hz EXCEPT
960Hz
640Hz
520Hz
1280Hz
1600Hz
Explication
Overtones are frequency which are multiples of fundamental frequency
Fundamental frequency - f1 = 320Hz
Overtones 320 x 3 = 640Hz
320 x 3 = 960HZ
320 x 4 = 1280Hz
320 X 5 = 1600hZ
Fundamental frequency - f1 = 320Hz
Overtones 320 x 3 = 640Hz
320 x 3 = 960HZ
320 x 4 = 1280Hz
320 X 5 = 1600hZ