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9th Class Science Sound Question Bank Sound Formative Objective Problems

  • question_answer
    Distance between 5th and 15th crest is 20 cm. What is the wave-length of sound?

    A)  2 cm        

    B)  4 cm

    C)  3 cm                                     

    D)  5 cm

    Correct Answer: A

    Solution :

      Not Available                                    


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