Question

shashwat your answer is right but pls answer me step by step​

Answer 1

Given : Velocity of sound in air v=344m/s

Wavelength of the sound waves

λ= velocity/frequency.

For ν1=20 Hz,

λ1= 344/20

=17.2 m.

For ν2=20 kHz,

λ2 = 344/1000×20

=1.72×10 ^-2 m.

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