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

  • question_answer
    Ozone layer depletion is caused by

    A) cosmic rays.

    B) human-made chemicals released into the atmosphere.

    C) electrical spark in the atmosphere.

    D) None of the above

    Correct Answer: B

    Solution :

    Option [b] is correct. Explanation : Ozone  depletion is caused by human-made chemicals released into the atmosphere. 


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