If we study the vibration of a pipe open at both ends, then which of the following statements is not true?

If we study the vibration of a pipe open at both ends, then which of the following statements is not true?
  1. Open end will be antinode
  2. Odd harmonics of the fundamental frequency will be generated
  3. All harmonics of the fundamental frequency will be generated
  4. Pressure change will be maximum at both ends

Solution

Statement (d) is not true because at the open ends, pressure change will be zero.

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