Dog can hear a sound of frequency 10 hz. Find the minimum wavelength of sound, if speed of sound is 340 m/s.
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Class 11
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>>Speed of a Travelling Wave
>>Given that sound travels in air at 340 m
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Given that sound travels in air at 340m/s, find the wavelength of the waves in air produced by a 20kHz sound source. If the same source is put in a water tank, what would be the wavelength of the sound waves in water? Speed of sound in water =1,480m/s.
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Given, (In air)
Velocity V=340m/s
Frequency f=20,000Hz
Wavelegth λ=?
V=f.λ
λ=
F
V
=
20,000
340
=0.017Hz
Also, Given (in Water)
Velocity, V=1480m/s
Frequencyf=20,000Hz
wavelength, λ=?
V=F.λ
λ=
F
V
=
20,000
1480
=0.074Hz
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