A closed organ pipe of length 0.80m is filled with air in which the speed of sound is 340ms−1. Assume that end-corrections are negligible.
(i) Determine the frequency of the first overtone produced by the pipe.
(ii) On a hot day the speed of sound in the pipe increases by 2%. Calculate the new frequency of the first overtone.
(iii) By what factor has the wavelength of the standing wave corresponding to this overtone changed because of the temperature rise?