Question

A bat can hear sound at frequency upto 120 khz. determine the wavelength of sound in air at this frequency. Take speed of sound as 344 m/s.

Answer 1

Explanation:

v=f×lambda.

344=120×lambda.

lambda=344/120.

so, wavelength= 2.86m.

Answer 2

Answer:

Frequency,

υ = 120 × 1000  Hz

Initial velocity,  = 344 m/s

Wavelength, λ =$\frac{u}{υ}$  = $\frac{344}{120 × 1000 }$

                     λ=2.86 × 10⁻³