NCERT Question 6 - Chapter 13 Class 8 - Sound

The sound from a mosquito is produced when it vibrates its wings at an average rate of 500 vibrations per second. What is the time period of the vibration?

Answer

Since the mosquito produces vibration at the rate of 500 vibrations per second,

Frequency = 500 Hz

Now,

Time period = 1/ Frequency

                   = 1/500

                   = 0.002 seconds