[" For a particular resonance tube,following are four "],[" of the six harmonics below "1000Hz" ; "],[300,600,750" and "900Hz],[" The two missing harmonics are "]

For an organ pipe, four of the six harmonics of frequency less than 1000 Hz are 300, 600, 750 and 900 Hz. The two missing harmonics are

For an organ pipe, four of the six harmonics of frequency less than 1000 Hz are 300, 600, 750 and 900 Hz. The two missing harmonics are

For a particular tube, among six harmonic frequencies below 1000 Hz, only four harmonic frequencies are given: 300 Hz, 600 Hz, 750 Hz and 900 Hz. What are the two other frequencies missing from this list?

For a certain organ pipe, three successive harmonics are 300 Hz, 420 Hz and 540 Hz. What is the frequency of the first overtone ?

A pipe produces notes of frequencies 300Hz, 600Hz, 900 Hz , the pipe is