Question 194: Waves

Question

The fundamental frequency of an air column in a pipe closed at one end is 150 Hz . If the same pipe is open at both the end, the frequencies produced in Hz are

Accepted Answer

For a closed pipe, fundamental frequency
$$ \mathrm{n}_1=\frac{\mathrm{v}}{4 \mathrm{~L}}=150 \mathrm{~Hz} $$
For an open pipe, fundamental frequency
$$ \mathrm{n}_1^{\prime}=\frac{\mathrm{v}}{2 \mathrm{~L}}=2 \mathrm{n}_1=300 \mathrm{~Hz} $$
In an open pipe all multiples of the fundamental are produced. Hence, frequencies produced can be $300 \mathrm{~Hz}, 600 \mathrm{~Hz}$ and so on.

Answer

$150,300,450,600$,........

Answer

$300,450,600,750$,........

Answer

$300,400,500,600$,........

Answer

$300,600,900,1200$,........

Waves

The fundamental frequency of an air column in a pipe closed at one end is 150 Hz . If the same pipe is open at both the end, the frequencies produced in Hz are

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