NCERT Question 9 - Chapter 12 Class 9 - Sound

Last updated at Dec. 16, 2024 by

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

Answer

The number of oscillations produced in one second is called frequency.

Frequency of the sound = 100 Hz

 

Hence, 

Number of oscillations in 1 second = 100

Number of oscillations in 60 seconds = 60 × 100                        

                                                                  = 6000

 

Number of vibrations in 1 minute is 6000.

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