Find the wavelength of sound for frequencies up to 120 kHz

cbse
sound

#1

Find the wavelength of sound for frequencies up to 120 kHz at which a bat can hear it. Take the speed of sound in air as 344 m


#2

Frequency = v / $\lambda $
Velocity of sound in air , v = 344m/s
Frequency = 120kHz = 120000Hz
$\lambda $ = 344/120000
$\lambda $ = 0.00286666
$\lambda $ = 2.8 x ${{10}^{-3}}$