9th Class Science Sound Question Bank 9th CBSE Science Sound

  • question_answer
      Distinguish between sound waves and light waves.

    Answer:

                      Difference between sound waves and light waves
    Sound Waves Light Waves
    Longitudinal by nature Transverse by nature
    Require material medium to travel Require medium to travel
    Cannot travel through vacuum Can travel through vacuum
    Speed is small in air (332 m/s) Speed is very high
    Produced by vibrating particles of a medium Produced by vibrating charged particles only
    Audible sound is of low frequency and high wavelength Visible light is of high frequency and small wavelength


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