12th Class Physics EM Waves Question Bank Case Based (MCQs) - Electromagnetic Waves

  • question_answer
    LASER is used in:

    A) optical disk drive.

    B) transmitting satellite signal.

    C) radio communication.

    D) ionization.

    Correct Answer: A

    Solution :

    Option [a] is correct Explanation : An optical disc drive (ODD) is a disc drive that uses laser light or electromagnetic waves within or near the visible light spectrum as part of the process of reading or writing data to form optical discs.


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