Q. An open organ pipe of length / vibrates in its fundamental mode. The pressure vibration is maximum
A) At the two ends
B) At the distance $1/2\ $ inside the ends
C) At the distance $1/4\ $ inside the ends
D) At the distance $1/8$ inside the ends
Explanation
(b) The first normal mode of vibration is called fundamental mode.
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For first normal mode of vibration
$\iota = \frac{\lambda_{1}}{2}$
Since, the pressure vibration is maximum at node, i.e., $at\ 1/2,$
Hence, the pressure variation is maximum at the
$x = \frac{1}{2}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.