A pipe, closed at one end, has a loudspeaker at the open end. For some frequencies of sound from the loudspeaker, a stationary sound wave is formed in the air within the pipe with an antinode at the open end of the pipe.
The length of the pipe is 0.85 m.
The speed of sound in air is $340m{s^{ - 1}}$.
Which frequency of sound from the loudspeaker would not produce a stationary wave?
1 )
100 Hz
200 Hz
3 )
300 Hz
4 )
500 Hz
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