Wavelength of sound is given as
[tex]wavelength = \frac{speed}{frequency}[/tex]
now we will have
[tex]speed = 340 m/s[/tex]
[tex]frequency = 25 kHz = 25 \times 10^3 Hz[/tex]
now we plug in all data in above equation
[tex]\lambda = \frac{340}{25 \times 10^3}[/tex]
[tex]\lambda = 0.014 m[/tex]
[tex]\lambda = 1.4 cm[/tex]
so here wavelength will be 1.4 cm
