Answers

2016-04-11T11:22:59+05:30

It is given that,

Velocity (v) of sound = 339 m/s

Wavelength (λ) = 1.5 cm = 0.015 m

Frequency (ν) =?

We know that, speed = wavelength X frequency


⇒340 m/s = 0.015 m X frequency


⇒ Frequency = 340 m/s / 0.015 m = 22666.66 Hz


⇒ Frequency = 22666.66 Hz.


Hence the freq. is beyond 20000 Hz so it is not audible..

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2016-04-11T16:30:40+05:30

velocity of sound = 339 m/s
wavelength = 1.5 cm = 0.015 m

frequency =?

We know that

speed = wavelength * frequency

340 m/s = 0.015 m * frequency

frequency = 340 m/s / 0.015 m = 22666.66 Hz

frequency = 22666.66 Hz.

since the frequency is more 2kHz 

so it is inaudible..


i hope it helps.... 

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