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 resonance frequencies are observed at 400 Hz, 560 Hz and 720 Hz. The fundamental frequency of the pipe is

For a certain organ pipe, three successive resonant frequencies are observed at 300 Hz. 420 Hz and 540 Hz. The speed of sound in air is 340 ms^(-1) , The pipe is a

Drw graphs of beat produced by two harmonic waves of frequency 11 Hz and 9 Hz.

For a certain pipe, three successive resonant frequencies are observed at 300 Hz, 420 Hz and 540 Hz. The speed of sound in air is 340 m/s. The pipe is a