Sound WavesHard
Question
An open pipe is suddenly closed at one end with the result that the frequncy of third harmonic of the closed pipe is found to be higher by 100 Hz than the fundamental frequency of the open pipe. The fundamental frequncy of the open pipe is
Options
A.200
B.300
C.240
D.480
Solution
Length of organ pipe is same in both the case. Fundamental frequency of open is f1 = 
and Frequency of third harmonic of closed pipe will be f2 = 3
Given that, f2 = f1 + 100
or f2 - f1 = 100
or
∴
or f1 = 200Hz.
Therefore, fundamental frequency of the open pipe is 200 Hz.
and Frequency of third harmonic of closed pipe will be f2 = 3 Given that, f2 = f1 + 100 or f2 - f1 = 100
or
∴
or f1 = 200Hz. Therefore, fundamental frequency of the open pipe is 200 Hz.
Create a free account to view solution
View Solution FreeMore Sound Waves Questions
An observer starts moving with uniform acceleration 'a' towards a stationary sound source of frequency f. As the observe...The fundamental frequency in an open organ pipe is equal to the third harmonic of a closed organ pipe. If the length of ...The exepression y = a sin bx sin ω trepre4senrs a stationary wave. The distance between the consecutive nodes is eq...The average speed of the bob of a simple pendulum oscillating with a small amplitude A. and time period T is...A string is cut into three parts, having fundamental frequencies n1, n2 and n3 respectively. Then original fundamental f...