9th Class Science Sound Question Bank Sound Summative Objective Problems

  • question_answer
    The given table lists some characteristics of four sounds I, II, III, and IV.
    Sound Amplitude (cm) Frequency
    I 1 1
    II 2 3
    III 3 2
    IV 4 2
    Which sound has the highest pitch?

    A)  I                                             

    B)  II       

    C)  III                                          

    D)  IV

    Correct Answer: B

    Solution :

      Pitch of a sound wave is directly proportional to the frequency of vibration. Hence, pitch is higher for sounds that have greater frequencies. It is clear from the given table that the frequency of wave II is greater than those of waves I, III, and IV. Hence, wave II has the highest pitch among the given sounds. The correct answer is B.


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