SELECT * FROM question_mgmt as q WHERE id=6541 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=12 AND subId=16 AND chapterId=376 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 8th science Sound the sound from a mosquito is produced when it vibr

Question:

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:

Number of vibrations of mosquito wings in one second = 500

Frequency = 500 Hz

Time period =          1                                                                                                                                                                                                                                                   Frequency

= 1/500

= 0.02 second

 


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