JEE Physics · Hard

Sound Waves: Open Pipe MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

Timer-based practiceDetailed answer reviewMobile-friendly flow
Open PipeHardQuestion 31260

Question

In an open pipe, if the pipe is stopped at one end (converted to closed), fundamental frequency becomes:
  1. A
    Same
  2. B
    Double
  3. C
    Half
    Correct
  4. D
    One-third

Correct answer

Half

Explanation

Open pipe f₁ = v/(2L). Closed pipe of same L: f₁' = v/(4L) = f₁/2. Stopping reduces fundamental by half.