What occurs to the velocity of ultrasonic waves as the frequency of the wave increases?

The velocity of ultrasonic waves is largely dependent on the properties of the material through which the waves are traveling rather than the frequency of the wave itself. In most materials, sound waves travel at a constant speed, dictated by factors such as density and elastic modulus.

When frequency increases, the wavelength of the ultrasonic wave decreases, but the speed of sound in that particular medium remains unaffected. Therefore, if the material is unchanged, the velocity will stay constant regardless of frequency changes.

It’s essential to understand that while frequency and wavelength are inversely related as per the wave equation, the wave velocity is intrinsic to the medium. Thus, the answer highlights that the speed of ultrasonic waves does depend on the specific characteristics of the material they propagate through.