Question

A bee is making a sound by vibrating its wings 500 times per second. What is the time period of the sound?​

• A. 0.002 s​
• B. 0.2 s​
• C. 500 s​
• D. 0.02 s

Answer 1

The correct option is A 0.002 s​

It is given that the sound from a mosquito is produced when it vibrates its wings at an average rate of $500$ vibrations per second.
It means the frequency of sound is $500Hz$.
We know that the relation between the time period and the frequency is: $f=1/T$ or $T=1/f$
Substitute $f=500$
Therefore, $T=1/500$
$T=0.002s$
So, the time period is $0.002s$.
Hence, the correct option is A.