In a resonance tube experiment, if the fundamental frequency of the vibrating air column is 280Hz, the frequency of the third overtone is
A
70Hz
B
840Hz
C
1120Hz
D
1960Hz
Verified Correct Answer: D.
Physical Principles & Numerical Solution
F3 = 7Fo
= 7 x 280
= 1960Hz
Source: Myschool Past Questions Archive (Record #27643)