First slide

Stationary waves

Question

If the velocity of sound in air is 350 m/s. Then the fundamental frequency of an open organ pipe of length 50 cm, will be

Easy

A

350 Hz
B

175 Hz
C

900 Hz
D

750 Hz

Solution

Fundamental frequency of open pipe $n_{1} = \frac{v}{2 l} = \frac{350}{2 \times 0 .5} = 350 Hz$ .

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