Question

11. A sound wave in a certain fluid medium
is reflected at an obstacle to form a
standing wave. The distance between
two successive nodes is 3.75 cm. If the
velocity of sound is 1500 m/s, find the
frequency
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Answer 1

Answer:

we know that speed = wavelength×frequency

here wavelength= 3.75cm/100=0.0375m

velocity= 1500 m/s

so frequency= speed/wavelength

= 1500/0.375

= 1500000/375

= 4000 hz or 4khz

hope it helps you

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