Question

    Which statement about Cathode Rays is incorrect ?

    A They travel in straight lines Correct Answer Incorrect Answer
    B They produce fluorescence Correct Answer Incorrect Answer
    C They can penetrate thin metal foils Correct Answer Incorrect Answer
    D They are deflected by both electric and magnetic fields Correct Answer Incorrect Answer

    Solution

    The incorrect statement is that cathode rays travel in straight lines; while they generally do, they can be deflected by electric and magnetic fields, indicating that they do not always travel straight.

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