what would be the velocity of a wave with frequency of 20Hz and wavelength of 20m? mention if the frequency of the sound will be audie here?
Plz help
Answers
Answered by
57
Answer:
Given :
Frequency of wave = 20 Hz
Wavelength = 20 m
To find:
Velocity of the wave
Concept:
Velocity is given be the product of the frequency and wavelength of the wave.
V = λ × μ ,
where λ is the wavelength and μ is the frequency.
Any wave is audible if it ranges between 20 Hz and 20,000 Hz .
Calculation:
Velocity = λ × μ
=> V = 20 × 20
=> V = 400 m/s
Sound will be audible since it falls in the range of 20 Hz and 20000 Hz.
Answered by
28
☆ AnswEr :
➡ velocity =(400)m/s
☆To finD: Velocity of the wave.
☆ExplanatiOn:
1) Frequency= 20Hz
2) Wavelength= 20m
_________________________
☆We know that sound is audible only if it ranges between 20Hz-20,000Hz.
➡So,now ☆velocity=Frequency×Wavelength
➡Velocity=20×20
➡Velocity=400m/s✔
"Sound is audible as it falls between the range 20Hz-20,000Hz".
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