9th Class Science Sound Question Bank Sound

  • question_answer
    A microphone is connected to a cathode ray oscilloscope. A loudspeaker giving a single note is switch on. The trace shown in the figure appears on the screen.
     
    Which of the following shows the softer but same frequency note of the given note?
       

    A)  

    B)

    C)

    D)

    Correct Answer: A

    Solution :

    The sound wave having less amplitude will be softer.


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