The ________________ is defined as the number of pressure variation

the-is-defined-as-the-number-of-pressure-variation

The ________________ is defined as the number of pressure variation which a  sounding body makes in each unit of time.

A. Note

B. Pitch

C. Wavelength

D. Intensity

The question was posed to me during an interview for a job.

This is a very interesting question from Acoustic Design of Auditorium topic in section Acoustics and Ventilation of Construction & Building Materials

The correct option is B. Pitch

Explanation: The greater the number of variations, the higher will be the Pitch. The intensity of sound is defined as the flow of sound energy per unit of time through a unit area.