Question

One sound wave strikes a person's ear every $1/100$ of a second. The speed of sound where the person is located is $345m/s$.
What is the frequency of the sound?

• A. $3.45Hz$
• B. $34,500Hz$
• C. $0.01Hz$
• D. $100Hz$
• E. $2.9Hz$

Answer 1

Answer: (D)

$100Hz$

Time period of sound wave $T=\frac{1}{100}$ second

$\therefore$ Frequency of sound wave $\nu =\frac{1}{T}=100$ $Hz$