6th Class General Knowledge Sample Paper General Knowledge Olympiad Model Test Paper-4

  • question_answer
    What do you use to turn sound waves into small electric currents so that they can be recorded?

    A)  Micro phone     

    B)  Telephone

    C)  Gramophone                

    D)  Cell phone

    E)  None of these

    Correct Answer: A

    Solution :

    Not Available    


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