SSC General Science & Technology Sample Paper NCERT Sample Paper-3

  • question_answer
    Energy conversions in a loudspeaker are:

    A)  Sound to mechanical to electrical

    B)  Electrical to mechanical to sound

    C)  Sound to electrical to sound

    D)  Mechanical to sound

    Correct Answer: B

    Solution :

    [b] Loudspeakers use electro-mechano-acoustic transduction, i.e. they convert electrical energy into mechanical energy, which in turn is converted into acoustic energy. Conversely microphones convert acoustic energy into mechanical energy and then electrical energy.

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