Find the wavelength of sound wave of frequency 4.2 MHz travelling with

1.	Find the wavelength of sound wave of frequency 4.2 MHz travelling with a speed 1.7 km//s.
Answer» Solution :We KNOW , `v = f lamda` `THEREFORE AMDA = (v)/(f) = (1.7 xx 10 ^(3))/(4.2 xx 10 ^(6)) =4.0476 xx 10 ^(-4) m`

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