Question

The fundamental frequency of a vibrating organ pipe is $200Hz$

• A. The first overtone is $400Hz$
• B. The first overtone may be $400Hz$
• C. The first overtone may be $600Hz$
• D. $600Hz$ is an second overtone

Answer 1

Answer: (B), (C), (D)

The correct options are
B The first overtone may be $400Hz$
C The first overtone may be $600Hz$
D $600Hz$ is an second overtone

If the pipe is closed, the first overtone may have frequency $=3v1=3\times 200=600Hz$. If the pipe is open, the first overtone may have frequency $=2v1=2\times 200=400Hz$. The second overtone may have frequency , $v=3v1=3\times 200=600Hz$.