Which term describes the distance between successive peaks of an ultrasonic wave traveling through a medium?

Which term describes the distance between successive peaks of an ultrasonic wave traveling through a medium?

• A. Velocity
• B. Wavelength
• C. Pulse length
• D. Frequency

Answer: (B)

The distance between successive peaks is the wavelength of the ultrasonic wave in that medium. This spatial period tells you how far apart the crests are as the wave travels. Wavelength is determined by how fast the wave moves and how often it oscillates, described by the relationship lambda = v / f, where v is the speed of sound in the medium and f is the frequency. So, increasing frequency at the same speed shortens the spacing between peaks. Understanding these terms helps: velocity is the propagation speed, not the spacing; pulse length is how long a single emitted pulse extends in space (often a few wavelengths long, depending on the number of cycles in the pulse); frequency is how many cycles occur per second, a temporal property rather than a spatial spacing.

The distance between successive peaks is the wavelength of the ultrasonic wave in that medium. This spatial period tells you how far apart the crests are as the wave travels. Wavelength is determined by how fast the wave moves and how often it oscillates, described by the relationship lambda = v / f, where v is the speed of sound in the medium and f is the frequency. So, increasing frequency at the same speed shortens the spacing between peaks.

Understanding these terms helps: velocity is the propagation speed, not the spacing; pulse length is how long a single emitted pulse extends in space (often a few wavelengths long, depending on the number of cycles in the pulse); frequency is how many cycles occur per second, a temporal property rather than a spatial spacing.