Sound Free Lessons for Class 9th Physics

In this course you will learn

  • What is Sound
  • Mediums in which sound travels
  • Graphical representation of sound
  • Meaning and use of wavelength ,Frequency,Amplitude,Time Period
  • Sonar
  • Characteristics of sound
  • Frequency range of hearing
  • Loudness Pitch Quality
  • The Human ear and its working
  • Taking care of Ears

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