Question

Frequency of a sound wave is defined as:

• A. number of compressions/rarefactions per unit time
• B. distance between two peaks
• C. time between occurrence of two valleys/peaks
• D. all of these

Answer 1

The correct option is A

number of compressions/rarefactions per unit time

Frequency is the number of oscillations per unit time. Hence, in other words, it can be defined as a number of compressions or rarefactions produced (passing through an area) per unit time.