SELECT * FROM question_mgmt as q WHERE id=4247 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=8 AND subId=16 AND chapterId=192 and ex_no='11' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 9th science Sound the frequency of a source of sound is 100 hz how

Question:

The frequency of a source of sound is 100 Hz. How many times does it vibrate in a minute?

Answer:

The no. of oscillations produced in one second is called frequency .

Frequency of sound = 100 Hz

Total time = 1 min = 60 s

We know that,

Number of oscillations = Frequency × Total time

Number of oscillations/Vibrations = 100 × 60 = 6000

Therefore , the source vibrates 6000 times in a minute, producing a frequency of 100 Hz.


SELECT ex_no,question,question_no,id,chapter FROM question_mgmt as q WHERE courseId='8' AND subId='16' AND ex_no!=0 AND status=1 and id!=4247 ORDER BY views desc, last_viewed_on desc limit 0,10
SELECT ex_no,question,question_no,id,chapter FROM question_mgmt as q WHERE courseId='8' AND subId='16' AND ex_no!=0 AND status=1 and id!=4247 ORDER BY last_viewed_on desc limit 0,10

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  • 4 months ago

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  • Answered by Ekta Mehta
  • 4 months ago

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  • Answered by Ekta Mehta
  • 4 months ago

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