Q. An open organ pipe has fundamental frequency 100 Hz. What frequency will be produced if its one end is closed?
A) 100,200,300……
B) 50,150,250……
C) 50,100, 200,300….
D) 50,100,150,200……
Explanation
(b) When one end is closed, $n_{1} = \frac{100}{2} = 50\ Hz$
$n_{2} = 3n_{1} = 150Hz,\ n_{3} = 5n_{1} = 250\ Hz$ and so on.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.