A pipe open at both ends resonates at a fundamental frequency fopen. When one end is covered and the pipe is again made to resonate, the fundamental frequency is fclosed. Which of the following expressions describes how these two resonant frequencies compare?

1.) fclosed = (1/2) fopen

2.) fclosed = (3/2) fopen

3.) none of these

4.) fclosed = fopen

5.) fclosed = 2 fopen

Question

Cindy Curtis

Physics

24 June, 16:04

A pipe open at both ends resonates at a fundamental frequency fopen. When one end is covered and the pipe is again made to resonate, the fundamental frequency is fclosed. Which of the following expressions describes how these two resonant frequencies compare?

1.) fclosed = (1/2) fopen

2.) fclosed = (3/2) fopen

3.) none of these

4.) fclosed = fopen

5.) fclosed = 2 fopen

+4

Answers (1)

Know the Answer?

Mason Mack · Answer 1

option (1)

Explanation:

fundamental frequency of open pipe, fopen = v/2L

fundamental frequency of closed pipe, f closed = v / 4L

By dividing both of them

f open = 2 x f closed

f open = two times f closed

f closed = 1 / 2 x f open