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Revisiting Standing Waves

Velocity of s...

Question

Velocity of sound in air is 320 m/s. A pipe closed at one end has a length of 1m. Neglecting end correction, the air column in the pipe can resonate for the sound of frequency ;

A

100 Hz

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B

260 Hz

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C

320 Hz

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D

400 Hz

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Solution

The correct option is D
400 Hz

The fundamental frequency is
Fo = $\frac{v}{4 l}$
= $\frac{320}{4 \times 1}$
= 80 Hz

It will resonate for 80Hz, 240 Hz, 400 Hz,_ _ _ _ _

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