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By Savita S. More

Chhattisgarh Board Class 8 Science Chapter 10 Solution

Last updated on February 9th, 2024 at 04:30 pm

Q: What makes an object produce sound?

Sound is produced by the vibration of an object. When an object undergoes oscillatory motion, it moves back and forth about a mean position.

 

Q: The frequency of a vibrating object is 20 hertz. What do you understand by this statement?

When the frequency of a vibrating object is 20 hertz, it means that the object completes 20 oscillations or vibrations in one second.

 

Q: An object completes 20 oscillations in ten second; find its frequency and time period.  

To find the frequency and time period when an object completes 20 oscillations in ten seconds, you can use the following formulas:

  • Frequency = Number of oscillations / Time
  • Frequency = 20 oscillations / 10 seconds
  • Frequency = 2 hertz (Hz)
  • Time period = 1 / Frequency
  • Time period = 1 / 2 Hz
  • Time period = 0.5 seconds

So, the frequency of the object is 2 hertz, and the time period is 0.5 seconds.

CG Board Class 8 Science Sound

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