The two nearest harmonics of a tube close at one end and open at other end are 220Hz and 260Hz. What is the fundamental frequency of the system?
(b)Thinking Process Frequency of nth harmonic in an closed end tube
Also, only odd harmonics exists in a closed end tube.
Now, given two nearest harmonics are of frequency 220Hz and 260Hz
Next harmonics occurs at
On subtracting Eq. (i) from Eq (ii). we get
So, fundamental frequency of the system