A closed organ pipe has fundamental frequency $100{\rm{ }}Hz$. What frequency will be produced, if its other end is also opened?

$\begin{array}{*{20}{l}} {200,400,600,800 \ldots } \end{array}$

$\begin{array}{*{20}{l}} {200,300,400,500 \ldots } \end{array}$

$\begin{array}{*{20}{l}} {100,300,500,700 \ldots } \end{array}$

$\begin{array}{*{20}{l}} {100,200,300,400 \ldots } \end{array}$

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JEE PHYSICS MCQ: WAVES

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A closed organ pipe has fundamental frequency

100\mathrm{ }Hz

. What frequency will be produced, if its other end is also opened?

View answer and explanation

Correct option: A

\begin{array}{llllllllllllllllllll} {200,400,600,800 \ldots } \end{array}

Option A (200,400,600,800...) is correct because opening the other end of a closed organ pipe doubles the fundamental frequency, and all subsequent harmonics are integer multiples of this new fundamental frequency.

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