Question

A sound wave has a speed of 339 m/s and frequency of 640 hz. What is the wavelength of this wave?

A. 0.5 meters

B. 0.42 meters

C. 0.79 meters

D. 1.22 meters

Answer 1

Given,

speed(v)= 339m/s

frequency(f)=640Hz

Now,

we know,

speed(v)= frequency × wavelength

or, 339=640 ×wavelength

or, wavelength= 339/640

or, wavelength =0.5m.

Therefore, option (A ) is correct...