Question

A sound wave has a time period of $0.5s$. What is the frequency of the wave?

• A. $2Hz$
• B. $12Hz$
• C. $16Hz$
• D. $9Hz$

Answer 1

The correct option is A

$2Hz$

Time period is time taken for producing one wave. Frequency is inversely proportional to the time period.

Given,

Time period $T$ = $0.5s$

Frequency = $\frac{1}{T}$ = $\frac{1}{0.5}=2s^{-1}=2Hz$