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12. Sound
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Q9 of 50 Page 12

Calculate that wavelength of a sound wave frequency is 220 Hz and speed is 440 m/s in a given medium.

We know that,

v = f × λ (i)


Given,


Speed, v = 440 m/s


Frequency, f = 220 Hz


Wavelength λ =?


Putting these values in (i), we get:


440 = 220 × λ


λ =


= 2 m

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12. Sound
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