Increasing the frequency of a longitudinal ultrasound wave will impact its velocity how?

In the context of ultrasound waves, the velocity of a wave is primarily determined by the properties of the medium through which it travels, such as its density and elasticity. When the frequency of a longitudinal ultrasound wave is increased, the speed at which the wave propagates does not change, as the wave velocity is a characteristic of the medium itself.

For instance, in a given medium like steel or water, sound waves will travel at a specific velocity regardless of whether the frequency is high or low. This is due to the intrinsic physical properties of that medium, where the changes in frequency will affect the wavelength but not the wave speed.

The correct answer reflects this understanding that frequency and wave velocity are related to the medium, but changing the frequency alone does not alter the speed of sound in that medium. This constancy of velocity with frequency is a fundamental principle in wave mechanics and is important in applications involving ultrasound, such as nondestructive testing, where knowing the propagation speed is essential for accurate measurements.